12641651 has 16 divisors (see below), whose sum is σ = 14895360. Its totient is φ = 10607520.

The previous prime is 12641641. The next prime is 12641663. The reversal of 12641651 is 15614621.

12641651 = T₄₉₅ + T₄₉₆ + ... + T₅₈₁.

12641651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12641651 is a prime.

It is a super-2 number, since 2×12641651² = 319622680011602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12641651.

It is not an unprimeable number, because it can be changed into a prime (12641641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6476 + ... + 8198.

It is an arithmetic number, because the mean of its divisors is an integer number (930960).

Almost surely, 2^12641651 is an apocalyptic number.

12641651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12641651 is the 1901-st centered heptagonal number.

12641651 is a deficient number, since it is larger than the sum of its proper divisors (2253709).

12641651 is a wasteful number, since it uses less digits than its factorization.

12641651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786.

The product of its digits is 1440, while the sum is 26.

The square root of 12641651 is about 3555.5099493603. The cubic root of 12641651 is about 232.9527985580.

The spelling of 12641651 in words is "twelve million, six hundred forty-one thousand, six hundred fifty-one".