4640636 has 96 divisors (see below), whose sum is σ = 11665920. Its totient is φ = 1555200.

The previous prime is 4640599. The next prime is 4640717. The reversal of 4640636 is 6360464.

It is a junction number, because it is equal to n+sod(n) for n = 4640599 and 4640608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76046 + ... + 76106.

It is an arithmetic number, because the mean of its divisors is an integer number (121520).

Almost surely, 2^4640636 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 4640636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5832960).

4640636 is an abundant number, since it is smaller than the sum of its proper divisors (7025284).

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

4640636 is a wasteful number, since it uses less digits than its factorization.

4640636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 4640636 is about 2154.2135455892. The cubic root of 4640636 is about 166.7986385840.

The spelling of 4640636 in words is "four million, six hundred forty thousand, six hundred thirty-six".