2649640075 has 6 divisors (see below), whose sum is σ = 3285553724. Its totient is φ = 2119712040.

The previous prime is 2649640061. The next prime is 2649640127. The reversal of 2649640075 is 5700469462.

It is a happy number.

It is not a de Polignac number, because 2649640075 - 2⁹ = 2649639563 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52992777 + ... + 52992826.

Almost surely, 2^2649640075 is an apocalyptic number.

2649640075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2649640075 is a deficient number, since it is larger than the sum of its proper divisors (635913649).

2649640075 is a wasteful number, since it uses less digits than its factorization.

2649640075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105985613 (or 105985608 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 2649640075 is about 51474.6546855829. The cubic root of 2649640075 is about 1383.7648499758.

The spelling of 2649640075 in words is "two billion, six hundred forty-nine million, six hundred forty thousand, seventy-five".