45685620 has 60 divisors (see below), whose sum is σ = 143322564. Its totient is φ = 12182400.

The previous prime is 45685597. The next prime is 45685669. The reversal of 45685620 is 2658654.

It can be written as a sum of positive squares in 2 ways, for example, as 23444964 + 22240656 = 4842^2 + 4716^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12481 + ... + 15720.

Almost surely, 2^45685620 is an apocalyptic number.

It is an amenable number.

45685620 is an abundant number, since it is smaller than the sum of its proper divisors (97636944).

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

45685620 is a wasteful number, since it uses less digits than its factorization.

45685620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28222 (or 28211 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 45685620 is about 6759.1138472436. The cubic root of 45685620 is about 357.4866606267.

The spelling of 45685620 in words is "forty-five million, six hundred eighty-five thousand, six hundred twenty".