157666707 has 24 divisors (see below), whose sum is σ = 257016240. Its totient is φ = 92258880.

The previous prime is 157666643. The next prime is 157666741. The reversal of 157666707 is 707666751.

It is not a de Polignac number, because 157666707 - 2⁶ = 157666643 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (157666777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24588 + ... + 30329.

It is an arithmetic number, because the mean of its divisors is an integer number (10709010).

Almost surely, 2^157666707 is an apocalyptic number.

157666707 is a deficient number, since it is larger than the sum of its proper divisors (99349533).

157666707 is a wasteful number, since it uses less digits than its factorization.

157666707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54963 (or 54960 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 157666707 is about 12556.5404072937. The cubic root of 157666707 is about 540.2316187460.

The spelling of 157666707 in words is "one hundred fifty-seven million, six hundred sixty-six thousand, seven hundred seven".