10642665 has 32 divisors (see below), whose sum is σ = 18942336. Its totient is φ = 5058560.

The previous prime is 10642661. The next prime is 10642669. The reversal of 10642665 is 56624601.

It is an interprime number because it is at equal distance from previous prime (10642661) and next prime (10642669).

It is not a de Polignac number, because 10642665 - 2² = 10642661 is a prime.

It is a super-2 number, since 2×10642665² = 226532636604450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10642661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8137 + ... + 9353.

It is an arithmetic number, because the mean of its divisors is an integer number (591948).

Almost surely, 2^10642665 is an apocalyptic number.

10642665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10642665 is a deficient number, since it is larger than the sum of its proper divisors (8299671).

10642665 is a wasteful number, since it uses less digits than its factorization.

10642665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 10642665 is about 3262.3097645687. The cubic root of 10642665 is about 219.9632514377.

It can be divided in two parts, 106426 and 65, that added together give a triangular number (106491 = T₄₆₁).

The spelling of 10642665 in words is "ten million, six hundred forty-two thousand, six hundred sixty-five".