3640700 has 54 divisors (see below), whose sum is σ = 9202536. Its totient is φ = 1246560.

The previous prime is 3640697. The next prime is 3640711. The reversal of 3640700 is 70463.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4529 + ... + 5271.

Almost surely, 2^3640700 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 3640700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4601268).

3640700 is an abundant number, since it is smaller than the sum of its proper divisors (5561836).

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

3640700 is a wasteful number, since it uses less digits than its factorization.

3640700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 3640700 is about 1908.0618438615. The cubic root of 3640700 is about 153.8372937205.

The spelling of 3640700 in words is "three million, six hundred forty thousand, seven hundred".