157772660 has 24 divisors (see below), whose sum is σ = 331558920. Its totient is φ = 63064064.

The previous prime is 157772653. The next prime is 157772683. The reversal of 157772660 is 66277751.

It can be written as a sum of positive squares in 4 ways, for example, as 320356 + 157452304 = 566^2 + 12548^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51656 + ... + 54624.

It is an arithmetic number, because the mean of its divisors is an integer number (13814955).

Almost surely, 2^157772660 is an apocalyptic number.

157772660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157772660 is an abundant number, since it is smaller than the sum of its proper divisors (173786260).

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

157772660 is a wasteful number, since it uses less digits than its factorization.

157772660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635 (or 5633 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 157772660 is about 12560.7587350446. The cubic root of 157772660 is about 540.3526046428.

The spelling of 157772660 in words is "one hundred fifty-seven million, seven hundred seventy-two thousand, six hundred sixty".