77170340 has 48 divisors (see below), whose sum is σ = 175292208. Its totient is φ = 28368384.

The previous prime is 77170339. The next prime is 77170393. The reversal of 77170340 is 4307177.

It can be written as a sum of positive squares in 8 ways, for example, as 9634816 + 67535524 = 3104^2 + 8218^2 .

It is a super-2 number, since 2×77170340² = 11910522751431200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75674 + ... + 76686.

It is an arithmetic number, because the mean of its divisors is an integer number (3651921).

Almost surely, 2^77170340 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 77170340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87646104).

77170340 is an abundant number, since it is smaller than the sum of its proper divisors (98121868).

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

77170340 is a wasteful number, since it uses less digits than its factorization.

77170340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 77170340 is about 8784.6650476839. The cubic root of 77170340 is about 425.7455701870.

The spelling of 77170340 in words is "seventy-seven million, one hundred seventy thousand, three hundred forty".