10639651 has 6 divisors (see below), whose sum is σ = 11694956. Its totient is φ = 9672300.

The previous prime is 10639649. The next prime is 10639663. The reversal of 10639651 is 15693601.

10639651 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10639651 - 2¹ = 10639649 is a prime.

It is a super-2 number, since 2×10639651² = 226404346803602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10639631) 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, 43845 + ... + 44086.

Almost surely, 2^10639651 is an apocalyptic number.

10639651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10639651 is a deficient number, since it is larger than the sum of its proper divisors (1055305).

10639651 is an equidigital number, since it uses as much as digits as its factorization.

10639651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87953 (or 87942 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 10639651 is about 3261.8477892140. The cubic root of 10639651 is about 219.9424849650.

The spelling of 10639651 in words is "ten million, six hundred thirty-nine thousand, six hundred fifty-one".