7640237907 has 6 divisors (see below), whose sum is σ = 11035899212. Its totient is φ = 5093491932.

The previous prime is 7640237887. The next prime is 7640237939. The reversal of 7640237907 is 7097320467.

It is a happy number.

It is not a de Polignac number, because 7640237907 - 2²³ = 7631849299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7640237977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424457653 + ... + 424457670.

Almost surely, 2^7640237907 is an apocalyptic number.

7640237907 is a deficient number, since it is larger than the sum of its proper divisors (3395661305).

7640237907 is a wasteful number, since it uses less digits than its factorization.

7640237907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848915329 (or 848915326 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 7640237907 is about 87408.4544366276. The cubic root of 7640237907 is about 1969.5588443309.

The spelling of 7640237907 in words is "seven billion, six hundred forty million, two hundred thirty-seven thousand, nine hundred seven".