157620723 has 12 divisors (see below), whose sum is σ = 227571480. Its totient is φ = 96997056.

The previous prime is 157620707. The next prime is 157620731. The reversal of 157620723 is 327026751.

It is not a de Polignac number, because 157620723 - 2⁴ = 157620707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157620733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154938 + ... + 155951.

It is an arithmetic number, because the mean of its divisors is an integer number (18964290).

Almost surely, 2^157620723 is an apocalyptic number.

157620723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

157620723 is a deficient number, since it is larger than the sum of its proper divisors (69950757).

157620723 is a wasteful number, since it uses less digits than its factorization.

157620723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310918 (or 310905 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 157620723 is about 12554.7091961542. The cubic root of 157620723 is about 540.1790935455.

The spelling of 157620723 in words is "one hundred fifty-seven million, six hundred twenty thousand, seven hundred twenty-three".