3640765734 has 24 divisors (see below), whose sum is σ = 8160338160. Its totient is φ = 1171740528.

The previous prime is 3640765717. The next prime is 3640765757. The reversal of 3640765734 is 4375670463.

3640765734 is a `hidden beast` number, since 3 + 6 + 4 + 0 + 76 + 573 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 3640765734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3486802 + ... + 3487845.

It is an arithmetic number, because the mean of its divisors is an integer number (340014090).

Almost surely, 2^3640765734 is an apocalyptic number.

3640765734 is an abundant number, since it is smaller than the sum of its proper divisors (4519572426).

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

3640765734 is a wasteful number, since it uses less digits than its factorization.

3640765734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974684 (or 6974681 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 45.

The square root of 3640765734 is about 60338.7581410158. The cubic root of 3640765734 is about 1538.3821957542.

The spelling of 3640765734 in words is "three billion, six hundred forty million, seven hundred sixty-five thousand, seven hundred thirty-four".