2472660639 has 24 divisors (see below), whose sum is σ = 3595517952. Its totient is φ = 1637450640.

The previous prime is 2472660623. The next prime is 2472660649. The reversal of 2472660639 is 9360662742.

2472660639 is a `hidden beast` number, since 2 + 4 + 7 + 2 + 6 + 6 + 0 + 639 = 666.

It is not a de Polignac number, because 2472660639 - 2⁴ = 2472660623 is a prime.

It is a super-2 number, since 2×2472660639² = 12228101271319776642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2472660594 and 2472660603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2472660649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 932814 + ... + 935460.

It is an arithmetic number, because the mean of its divisors is an integer number (149813248).

Almost surely, 2^2472660639 is an apocalyptic number.

2472660639 is a deficient number, since it is larger than the sum of its proper divisors (1122857313).

2472660639 is a wasteful number, since it uses less digits than its factorization.

2472660639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 2472660639 is about 49725.8548342811. The cubic root of 2472660639 is about 1352.2433006857.

The spelling of 2472660639 in words is "two billion, four hundred seventy-two million, six hundred sixty thousand, six hundred thirty-nine".