113556649 has 2 divisors, whose sum is σ = 113556650. Its totient is φ = 113556648.

The previous prime is 113556647. The next prime is 113556671. The reversal of 113556649 is 946655311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104960025 + 8596624 = 10245^2 + 2932^2 .

It is a cyclic number.

It is not a de Polignac number, because 113556649 - 2¹ = 113556647 is a prime.

It is a super-2 number, since 2×113556649² = 25790225064218402, which contains 22 as substring.

Together with 113556647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (113556647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56778324 + 56778325.

It is an arithmetic number, because the mean of its divisors is an integer number (56778325).

Almost surely, 2^113556649 is an apocalyptic number.

It is an amenable number.

113556649 is a deficient number, since it is larger than the sum of its proper divisors (1).

113556649 is an equidigital number, since it uses as much as digits as its factorization.

113556649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 113556649 is about 10656.2962139760. The cubic root of 113556649 is about 484.2513677891.

The spelling of 113556649 in words is "one hundred thirteen million, five hundred fifty-six thousand, six hundred forty-nine".