76321630 has 32 divisors (see below), whose sum is σ = 171279360. Its totient is φ = 23788320.

The previous prime is 76321627. The next prime is 76321631. The reversal of 76321630 is 3612367.

It is a super-3 number, since 3×76321630³ (a number of 25 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76321631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48790 + ... + 50329.

It is an arithmetic number, because the mean of its divisors is an integer number (5352480).

Almost surely, 2^76321630 is an apocalyptic number.

76321630 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

76321630 is an abundant number, since it is smaller than the sum of its proper divisors (94957730).

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

76321630 is a wasteful number, since it uses less digits than its factorization.

76321630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99144.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 76321630 is about 8736.2251573549. The cubic root of 76321630 is about 424.1790472895.

Adding to 76321630 its reverse (3612367), we get a palindrome (79933997).

The spelling of 76321630 in words is "seventy-six million, three hundred twenty-one thousand, six hundred thirty".