10699621 has 4 divisors (see below), whose sum is σ = 10710700. Its totient is φ = 10688544.

The previous prime is 10699609. The next prime is 10699627. The reversal of 10699621 is 12699601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8767521 + 1932100 = 2961^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 10699621 - 2¹⁵ = 10666853 is a prime.

It is a super-2 number, since 2×10699621² = 228963779087282, which contains 22 as substring.

It is a Duffinian number.

10699621 is a modest number, since divided by 9621 gives 1069 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10699627) 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 3 ways as a sum of consecutive naturals, for example, 3936 + ... + 6073.

It is an arithmetic number, because the mean of its divisors is an integer number (2677675).

Almost surely, 2^10699621 is an apocalyptic number.

It is an amenable number.

10699621 is a deficient number, since it is larger than the sum of its proper divisors (11079).

10699621 is a wasteful number, since it uses less digits than its factorization.

10699621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11078.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 10699621 is about 3271.0275144058. The cubic root of 10699621 is about 220.3549435622.

It can be divided in two parts, 1069 and 9621, that multiplied together give a square (10284849 = 3207²).

The spelling of 10699621 in words is "ten million, six hundred ninety-nine thousand, six hundred twenty-one".