157707646 has 4 divisors (see below), whose sum is σ = 236561472. Its totient is φ = 78853822.

The previous prime is 157707629. The next prime is 157707647. The reversal of 157707646 is 646707751.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×157707646² = 49743403213722632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157707647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39426910 + ... + 39426913.

It is an arithmetic number, because the mean of its divisors is an integer number (59140368).

Almost surely, 2^157707646 is an apocalyptic number.

157707646 is a deficient number, since it is larger than the sum of its proper divisors (78853826).

157707646 is an equidigital number, since it uses as much as digits as its factorization.

157707646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78853825.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 157707646 is about 12558.1704877741. The cubic root of 157707646 is about 540.2783727051.

The spelling of 157707646 in words is "one hundred fifty-seven million, seven hundred seven thousand, six hundred forty-six".