55900664 has 8 divisors (see below), whose sum is σ = 104813760. Its totient is φ = 27950328.

The previous prime is 55900651. The next prime is 55900667. The reversal of 55900664 is 46600955.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55900667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3493784 + ... + 3493799.

It is an arithmetic number, because the mean of its divisors is an integer number (13101720).

Almost surely, 2^55900664 is an apocalyptic number.

It is an amenable number.

55900664 is a deficient number, since it is larger than the sum of its proper divisors (48913096).

55900664 is a wasteful number, since it uses less digits than its factorization.

55900664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6987589 (or 6987585 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55900664 is about 7476.6746619069. The cubic root of 55900664 is about 382.3598848870.

The spelling of 55900664 in words is "fifty-five million, nine hundred thousand, six hundred sixty-four".