155650668 has 12 divisors (see below), whose sum is σ = 363184920. Its totient is φ = 51883552.

The previous prime is 155650661. The next prime is 155650697. The reversal of 155650668 is 866056551.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (155650661) 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, 6485433 + ... + 6485456.

It is an arithmetic number, because the mean of its divisors is an integer number (30265410).

Almost surely, 2^155650668 is an apocalyptic number.

It is an amenable number.

155650668 is an abundant number, since it is smaller than the sum of its proper divisors (207534252).

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

155650668 is a wasteful number, since it uses less digits than its factorization.

155650668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970896 (or 12970894 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 155650668 is about 12476.0036870786. The cubic root of 155650668 is about 537.9191385867.

The spelling of 155650668 in words is "one hundred fifty-five million, six hundred fifty thousand, six hundred sixty-eight".