76698180 has 144 divisors (see below), whose sum is σ = 254545200. Its totient is φ = 18579456.

The previous prime is 76698173. The next prime is 76698187. The reversal of 76698180 is 8189667.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (76698173) and next prime (76698187).

It can be written as a sum of positive squares in 8 ways, for example, as 2359296 + 74338884 = 1536^2 + 8622^2 .

It is a super-2 number, since 2×76698180² = 11765221630624800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (76698187) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170596 + ... + 171044.

It is an arithmetic number, because the mean of its divisors is an integer number (1767675).

Almost surely, 2^76698180 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76698180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127272600).

76698180 is an abundant number, since it is smaller than the sum of its proper divisors (177847020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76698180 is a wasteful number, since it uses less digits than its factorization.

76698180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 76698180 is about 8757.7497109703. The cubic root of 76698180 is about 424.8754975563.

The spelling of 76698180 in words is "seventy-six million, six hundred ninety-eight thousand, one hundred eighty".