772623642 has 16 divisors (see below), whose sum is σ = 1765996992. Its totient is φ = 220749600.

The previous prime is 772623641. The next prime is 772623653. The reversal of 772623642 is 246326277.

It is a self number, because there is not a number n which added to its sum of digits gives 772623642.

It is not an unprimeable number, because it can be changed into a prime (772623641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9197859 + ... + 9197942.

It is an arithmetic number, because the mean of its divisors is an integer number (110374812).

Almost surely, 2^772623642 is an apocalyptic number.

772623642 is an abundant number, since it is smaller than the sum of its proper divisors (993373350).

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

772623642 is a wasteful number, since it uses less digits than its factorization.

772623642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18395813.

The product of its digits is 169344, while the sum is 39.

The square root of 772623642 is about 27796.1083966803. The cubic root of 772623642 is about 917.6054783490.

The spelling of 772623642 in words is "seven hundred seventy-two million, six hundred twenty-three thousand, six hundred forty-two".