155420664 has 64 divisors (see below), whose sum is σ = 470188800. Its totient is φ = 41793024.

The previous prime is 155420653. The next prime is 155420747. The reversal of 155420664 is 466024551.

155420664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24354 + ... + 30065.

It is an arithmetic number, because the mean of its divisors is an integer number (7346700).

Almost surely, 2^155420664 is an apocalyptic number.

155420664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155420664 is an abundant number, since it is smaller than the sum of its proper divisors (314768136).

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

155420664 is a wasteful number, since it uses less digits than its factorization.

155420664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54452 (or 54448 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 155420664 is about 12466.7824237050. The cubic root of 155420664 is about 537.6540480755.

The spelling of 155420664 in words is "one hundred fifty-five million, four hundred twenty thousand, six hundred sixty-four".