155668000 has 48 divisors (see below), whose sum is σ = 382486104. Its totient is φ = 62265600.

The previous prime is 155667989. The next prime is 155668003. The reversal of 155668000 is 866551.

It can be written as a sum of positive squares in 4 ways, for example, as 18215824 + 137452176 = 4268^2 + 11724^2 .

It is not an unprimeable number, because it can be changed into a prime (155668003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15459 + ... + 23458.

Almost surely, 2^155668000 is an apocalyptic number.

155668000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155668000 is an abundant number, since it is smaller than the sum of its proper divisors (226818104).

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

155668000 is an equidigital number, since it uses as much as digits as its factorization.

155668000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38942 (or 38924 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 155668000 is about 12476.6982811960. The cubic root of 155668000 is about 537.9391039545.

The spelling of 155668000 in words is "one hundred fifty-five million, six hundred sixty-eight thousand".