7864650040 has 32 divisors (see below), whose sum is σ = 19056653280. Its totient is φ = 2903870592.

The previous prime is 7864650023. The next prime is 7864650083. The reversal of 7864650040 is 400564687.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7864649975 and 7864650002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7561644 + ... + 7562683.

It is an arithmetic number, because the mean of its divisors is an integer number (595520415).

Almost surely, 2^7864650040 is an apocalyptic number.

It is an amenable number.

7864650040 is an abundant number, since it is smaller than the sum of its proper divisors (11192003240).

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

7864650040 is a wasteful number, since it uses less digits than its factorization.

7864650040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15124351 (or 15124347 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 7864650040 is about 88682.8621549846. The cubic root of 7864650040 is about 1988.6566221880.

The spelling of 7864650040 in words is "seven billion, eight hundred sixty-four million, six hundred fifty thousand, forty".