4640261427 has 12 divisors (see below), whose sum is σ = 6883751680. Its totient is φ = 3009899088.

The previous prime is 4640261407. The next prime is 4640261429. The reversal of 4640261427 is 7241620464.

4640261427 is a `hidden beast` number, since 4 + 640 + 2 + 6 + 1 + 4 + 2 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-4640261427 is a prime.

It is a super-2 number, since 2×4640261427² = 43064052221808152658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4640261391 and 4640261400.

It is not an unprimeable number, because it can be changed into a prime (4640261429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6967027 + ... + 6967692.

Almost surely, 2^4640261427 is an apocalyptic number.

4640261427 is a deficient number, since it is larger than the sum of its proper divisors (2243490253).

4640261427 is a wasteful number, since it uses less digits than its factorization.

4640261427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13934762 (or 13934759 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 4640261427 is about 68119.4643769312. The cubic root of 4640261427 is about 1667.9415069718.

The spelling of 4640261427 in words is "four billion, six hundred forty million, two hundred sixty-one thousand, four hundred twenty-seven".