168307457 has 8 divisors (see below), whose sum is σ = 169358400. Its totient is φ = 167260464.

The previous prime is 168307427. The next prime is 168307493. The reversal of 168307457 is 754703861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168307457 - 2⁶ = 168307393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168307427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135443 + ... + 136679.

It is an arithmetic number, because the mean of its divisors is an integer number (21169800).

Almost surely, 2^168307457 is an apocalyptic number.

It is an amenable number.

168307457 is a deficient number, since it is larger than the sum of its proper divisors (1050943).

168307457 is a wasteful number, since it uses less digits than its factorization.

168307457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 168307457 is about 12973.3363866046. The cubic root of 168307457 is about 552.1212375042.

The spelling of 168307457 in words is "one hundred sixty-eight million, three hundred seven thousand, four hundred fifty-seven".