155357664 has 96 divisors (see below), whose sum is σ = 508467456. Its totient is φ = 40350720.

The previous prime is 155357641. The next prime is 155357677. The reversal of 155357664 is 466753551.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 3117 + ... + 17900.

It is an arithmetic number, because the mean of its divisors is an integer number (5296536).

Almost surely, 2^155357664 is an apocalyptic number.

155357664 is a gapful number since it is divisible by the number (14) 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 155357664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254233728).

155357664 is an abundant number, since it is smaller than the sum of its proper divisors (353109792).

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

155357664 is a wasteful number, since it uses less digits than its factorization.

155357664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21048 (or 21040 counting only the distinct ones).

The product of its digits is 378000, while the sum is 42.

The square root of 155357664 is about 12464.2554530947. The cubic root of 155357664 is about 537.5813919651.

The spelling of 155357664 in words is "one hundred fifty-five million, three hundred fifty-seven thousand, six hundred sixty-four".