55616670 has 24 divisors (see below), whose sum is σ = 144603576. Its totient is φ = 14831088.

The previous prime is 55616669. The next prime is 55616677. The reversal of 55616670 is 7661655.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55616677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308892 + ... + 309071.

It is an arithmetic number, because the mean of its divisors is an integer number (6025149).

Almost surely, 2^55616670 is an apocalyptic number.

55616670 is an abundant number, since it is smaller than the sum of its proper divisors (88986906).

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

55616670 is a wasteful number, since it uses less digits than its factorization.

55616670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617976 (or 617973 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 55616670 is about 7457.6584797106. The cubic root of 55616670 is about 381.7112800600.

The spelling of 55616670 in words is "fifty-five million, six hundred sixteen thousand, six hundred seventy".