45640620 has 72 divisors (see below), whose sum is σ = 139177584. Its totient is φ = 12106368.

The previous prime is 45640607. The next prime is 45640633. The reversal of 45640620 is 2604654.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45640607) and next prime (45640633).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40302 + ... + 41418.

It is an arithmetic number, because the mean of its divisors is an integer number (1933022).

Almost surely, 2^45640620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45640620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69588792).

45640620 is an abundant number, since it is smaller than the sum of its proper divisors (93536964).

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

45640620 is a wasteful number, since it uses less digits than its factorization.

45640620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 45640620 is about 6755.7841883826. The cubic root of 45640620 is about 357.3692481568.

The spelling of 45640620 in words is "forty-five million, six hundred forty thousand, six hundred twenty".