63612649 has 4 divisors (see below), whose sum is σ = 64113664. Its totient is φ = 63111636.

The previous prime is 63612613. The next prime is 63612671. The reversal of 63612649 is 94621636.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63612649 - 2¹⁷ = 63481577 is a prime.

It is a super-2 number, since 2×63612649² = 8093138225594402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63612049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250317 + ... + 250570.

It is an arithmetic number, because the mean of its divisors is an integer number (16028416).

Almost surely, 2^63612649 is an apocalyptic number.

It is an amenable number.

63612649 is a deficient number, since it is larger than the sum of its proper divisors (501015).

63612649 is a wasteful number, since it uses less digits than its factorization.

63612649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501014.

The product of its digits is 46656, while the sum is 37.

The square root of 63612649 is about 7975.7538201727. The cubic root of 63612649 is about 399.1913852068.

It can be divided in two parts, 63612 and 649, that added together give a triangular number (64261 = T₃₅₈).

The spelling of 63612649 in words is "sixty-three million, six hundred twelve thousand, six hundred forty-nine".