155374664 has 8 divisors (see below), whose sum is σ = 291327510. Its totient is φ = 77687328.

The previous prime is 155374651. The next prime is 155374691. The reversal of 155374664 is 466473551.

It can be written as a sum of positive squares in only one way, i.e., 141372100 + 14002564 = 11890^2 + 3742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×155374664² = 48282572426225792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9710909 + ... + 9710924.

Almost surely, 2^155374664 is an apocalyptic number.

It is an amenable number.

155374664 is a deficient number, since it is larger than the sum of its proper divisors (135952846).

155374664 is a wasteful number, since it uses less digits than its factorization.

155374664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19421839 (or 19421835 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The square root of 155374664 is about 12464.9373845198. The cubic root of 155374664 is about 537.6009995169.

The spelling of 155374664 in words is "one hundred fifty-five million, three hundred seventy-four thousand, six hundred sixty-four".