12620549 has 2 divisors, whose sum is σ = 12620550. Its totient is φ = 12620548.

The previous prime is 12620533. The next prime is 12620561. The reversal of 12620549 is 94502621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10355524 + 2265025 = 3218^2 + 1505^2 .

It is a cyclic number.

It is not a de Polignac number, because 12620549 - 2⁴ = 12620533 is a prime.

It is a super-2 number, since 2×12620549² = 318556514122802, which contains 22 as substring.

It is a Chen prime.

It is equal to p₈₂₆₀₇₆ and since 12620549 and 826076 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12620149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6310274 + 6310275.

It is an arithmetic number, because the mean of its divisors is an integer number (6310275).

Almost surely, 2^12620549 is an apocalyptic number.

It is an amenable number.

12620549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12620549 is an equidigital number, since it uses as much as digits as its factorization.

12620549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 12620549 is about 3552.5412031390. The cubic root of 12620549 is about 232.8231080163.

The spelling of 12620549 in words is "twelve million, six hundred twenty thousand, five hundred forty-nine".