6615504949 has 16 divisors (see below), whose sum is σ = 7073642880. Its totient is φ = 6169089600.

The previous prime is 6615504937. The next prime is 6615504991. The reversal of 6615504949 is 9494055166.

It is a cyclic number.

It is not a de Polignac number, because 6615504949 - 2¹⁵ = 6615472181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6615514949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322024 + ... + 341950.

It is an arithmetic number, because the mean of its divisors is an integer number (442102680).

Almost surely, 2^6615504949 is an apocalyptic number.

It is an amenable number.

6615504949 is a deficient number, since it is larger than the sum of its proper divisors (458137931).

6615504949 is a wasteful number, since it uses less digits than its factorization.

6615504949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20220.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 6615504949 is about 81335.7544318610. The cubic root of 6615504949 is about 1877.2451871114.

The spelling of 6615504949 in words is "six billion, six hundred fifteen million, five hundred four thousand, nine hundred forty-nine".