2640632635 has 8 divisors (see below), whose sum is σ = 3335536080. Its totient is φ = 2001321504.

The previous prime is 2640632611. The next prime is 2640632647. The reversal of 2640632635 is 5362360462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2640632635 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2640632594 and 2640632603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13897972 + ... + 13898161.

It is an arithmetic number, because the mean of its divisors is an integer number (416942010).

Almost surely, 2^2640632635 is an apocalyptic number.

2640632635 is a deficient number, since it is larger than the sum of its proper divisors (694903445).

2640632635 is a wasteful number, since it uses less digits than its factorization.

2640632635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27796157.

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 2640632635 is about 51387.0862668823. The cubic root of 2640632635 is about 1382.1950355587.

The spelling of 2640632635 in words is "two billion, six hundred forty million, six hundred thirty-two thousand, six hundred thirty-five".