77472620 has 12 divisors (see below), whose sum is σ = 162692544. Its totient is φ = 30989040.

The previous prime is 77472617. The next prime is 77472641. The reversal of 77472620 is 2627477.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1936796 + ... + 1936835.

It is an arithmetic number, because the mean of its divisors is an integer number (13557712).

Almost surely, 2^77472620 is an apocalyptic number.

It is an amenable number.

77472620 is an abundant number, since it is smaller than the sum of its proper divisors (85219924).

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

77472620 is a wasteful number, since it uses less digits than its factorization.

77472620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873640 (or 3873638 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 77472620 is about 8801.8532139544. The cubic root of 77472620 is about 426.3007346954.

The spelling of 77472620 in words is "seventy-seven million, four hundred seventy-two thousand, six hundred twenty".