12653997 has 16 divisors (see below), whose sum is σ = 17379648. Its totient is φ = 8184960.

The previous prime is 12653957. The next prime is 12653999. The reversal of 12653997 is 79935621.

It is not a de Polignac number, because 12653997 - 2¹⁶ = 12588461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653999) 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 15 ways as a sum of consecutive naturals, for example, 29847 + ... + 30267.

It is an arithmetic number, because the mean of its divisors is an integer number (1086228).

Almost surely, 2^12653997 is an apocalyptic number.

It is an amenable number.

12653997 is a deficient number, since it is larger than the sum of its proper divisors (4725651).

12653997 is a wasteful number, since it uses less digits than its factorization.

12653997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 102060, while the sum is 42.

The square root of 12653997 is about 3557.2457041931. The cubic root of 12653997 is about 233.0286087904.

The spelling of 12653997 in words is "twelve million, six hundred fifty-three thousand, nine hundred ninety-seven".