76661910 has 64 divisors (see below), whose sum is σ = 220167360. Its totient is φ = 18869760.

The previous prime is 76661909. The next prime is 76661957. The reversal of 76661910 is 1916667.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 7411 + ... + 14430.

It is an arithmetic number, because the mean of its divisors is an integer number (3440115).

Almost surely, 2^76661910 is an apocalyptic number.

76661910 is an abundant number, since it is smaller than the sum of its proper divisors (143505450).

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

76661910 is a wasteful number, since it uses less digits than its factorization.

76661910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21870 (or 21864 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 76661910 is about 8755.6787286880. The cubic root of 76661910 is about 424.8085135068.

The spelling of 76661910 in words is "seventy-six million, six hundred sixty-one thousand, nine hundred ten".