149857664 has 32 divisors (see below), whose sum is σ = 325688040. Its totient is φ = 68116480.

The previous prime is 149857661. The next prime is 149857679. The reversal of 149857664 is 466758941.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149857661) 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, 51809 + ... + 54624.

Almost surely, 2^149857664 is an apocalyptic number.

It is an amenable number.

149857664 is an abundant number, since it is smaller than the sum of its proper divisors (175830376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149857664 is a wasteful number, since it uses less digits than its factorization.

149857664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106458 (or 106446 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 149857664 is about 12241.6364919074. The cubic root of 149857664 is about 531.1611707719.

The spelling of 149857664 in words is "one hundred forty-nine million, eight hundred fifty-seven thousand, six hundred sixty-four".