3640608742 has 8 divisors (see below), whose sum is σ = 5462702856. Its totient is φ = 1819707792.

The previous prime is 3640608737. The next prime is 3640608779. The reversal of 3640608742 is 2478060463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3640608695 and 3640608704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290623 + ... + 302890.

It is an arithmetic number, because the mean of its divisors is an integer number (682837857).

Almost surely, 2^3640608742 is an apocalyptic number.

3640608742 is a deficient number, since it is larger than the sum of its proper divisors (1822094114).

3640608742 is a wasteful number, since it uses less digits than its factorization.

3640608742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596582.

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 3640608742 is about 60337.4572052883. The cubic root of 3640608742 is about 1538.3600834490.

The spelling of 3640608742 in words is "three billion, six hundred forty million, six hundred eight thousand, seven hundred forty-two".