155374668 has 72 divisors (see below), whose sum is σ = 403865280. Its totient is φ = 50342400.

The previous prime is 155374651. The next prime is 155374691. The reversal of 155374668 is 866473551.

155374668 is a `hidden beast` number, since 15 + 537 + 46 + 68 = 666.

It is a super-2 number, since 2×155374668² = 48282574912220448, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 387268 + ... + 387668.

It is an arithmetic number, because the mean of its divisors is an integer number (5609240).

Almost surely, 2^155374668 is an apocalyptic number.

155374668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155374668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201932640).

155374668 is an abundant number, since it is smaller than the sum of its proper divisors (248490612).

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

155374668 is a wasteful number, since it uses less digits than its factorization.

155374668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 682 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 155374668 is about 12464.9375449699. The cubic root of 155374668 is about 537.6010041302.

The spelling of 155374668 in words is "one hundred fifty-five million, three hundred seventy-four thousand, six hundred sixty-eight".