155006665 has 32 divisors (see below), whose sum is σ = 210908160. Its totient is φ = 108345600.

The previous prime is 155006659. The next prime is 155006671. The reversal of 155006665 is 566600551.

It is an interprime number because it is at equal distance from previous prime (155006659) and next prime (155006671).

It is not a de Polignac number, because 155006665 - 2⁵ = 155006633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155006665.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390247 + ... + 390643.

It is an arithmetic number, because the mean of its divisors is an integer number (6590880).

Almost surely, 2^155006665 is an apocalyptic number.

It is an amenable number.

155006665 is a deficient number, since it is larger than the sum of its proper divisors (55901495).

155006665 is a wasteful number, since it uses less digits than its factorization.

155006665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 155006665 is about 12450.1672679527. The cubic root of 155006665 is about 537.1762347998.

The spelling of 155006665 in words is "one hundred fifty-five million, six thousand, six hundred sixty-five".