53306670 has 72 divisors (see below), whose sum is σ = 135341928. Its totient is φ = 13436640.

The previous prime is 53306657. The next prime is 53306699. The reversal of 53306670 is 7660335.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1239669 + ... + 1239711.

It is an arithmetic number, because the mean of its divisors is an integer number (1879749).

Almost surely, 2^53306670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53306670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67670964).

53306670 is an abundant number, since it is smaller than the sum of its proper divisors (82035258).

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

53306670 is a wasteful number, since it uses less digits than its factorization.

53306670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 30.

The square root of 53306670 is about 7301.1416915439. The cubic root of 53306670 is about 376.3516732029.

Multiplying 53306670 by its sum of digits (30), we get a square (1599200100 = 39990²).

53306670 divided by its sum of digits (30) gives a square (1776889 = 1333²).

The spelling of 53306670 in words is "fifty-three million, three hundred six thousand, six hundred seventy".