155670489 has 24 divisors (see below), whose sum is σ = 243122880. Its totient is φ = 95414112.

The previous prime is 155670469. The next prime is 155670491. The reversal of 155670489 is 984076551.

155670489 is a `hidden beast` number, since 1 + 5 + 567 + 0 + 4 + 89 = 666.

It is not a de Polignac number, because 155670489 - 2⁵ = 155670457 is a prime.

It is a super-2 number, since 2×155670489² = 48466602290998242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155670469) 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, 28242 + ... + 33300.

It is an arithmetic number, because the mean of its divisors is an integer number (10130120).

Almost surely, 2^155670489 is an apocalyptic number.

It is an amenable number.

155670489 is a deficient number, since it is larger than the sum of its proper divisors (87452391).

155670489 is a wasteful number, since it uses less digits than its factorization.

155670489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341 (or 5338 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 155670489 is about 12476.7980267375. The cubic root of 155670489 is about 537.9419710033.

The spelling of 155670489 in words is "one hundred fifty-five million, six hundred seventy thousand, four hundred eighty-nine".