155622665 has 8 divisors (see below), whose sum is σ = 203724288. Its totient is φ = 113180080.

The previous prime is 155622659. The next prime is 155622683. The reversal of 155622665 is 566226551.

It is a happy number.

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

It is not a de Polignac number, because 155622665 - 2²⁴ = 138845449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414697 + ... + 1414806.

It is an arithmetic number, because the mean of its divisors is an integer number (25465536).

Almost surely, 2^155622665 is an apocalyptic number.

It is an amenable number.

155622665 is a deficient number, since it is larger than the sum of its proper divisors (48101623).

155622665 is a wasteful number, since it uses less digits than its factorization.

155622665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829519.

The product of its digits is 108000, while the sum is 38.

The square root of 155622665 is about 12474.8813621613. The cubic root of 155622665 is about 537.8868777699.

The spelling of 155622665 in words is "one hundred fifty-five million, six hundred twenty-two thousand, six hundred sixty-five".