157669907 has 4 divisors (see below), whose sum is σ = 157700400. Its totient is φ = 157639416.

The previous prime is 157669901. The next prime is 157669931. The reversal of 157669907 is 709966751.

157669907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709966751 = 13 ⋅54612827.

It is a cyclic number.

It is not a de Polignac number, because 157669907 - 2⁶ = 157669843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157669901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5348 + ... + 18545.

It is an arithmetic number, because the mean of its divisors is an integer number (39425100).

Almost surely, 2^157669907 is an apocalyptic number.

157669907 is a deficient number, since it is larger than the sum of its proper divisors (30493).

157669907 is an equidigital number, since it uses as much as digits as its factorization.

157669907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30492.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 157669907 is about 12556.6678302805. The cubic root of 157669907 is about 540.2352735643.

The spelling of 157669907 in words is "one hundred fifty-seven million, six hundred sixty-nine thousand, nine hundred seven".