2649640575 has 12 divisors (see below), whose sum is σ = 4380739208. Its totient is φ = 1413141600.

The previous prime is 2649640571. The next prime is 2649640579. The reversal of 2649640575 is 5750469462.

It is an interprime number because it is at equal distance from previous prime (2649640571) and next prime (2649640579).

It is not a de Polignac number, because 2649640575 - 2² = 2649640571 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 (2649640571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17664196 + ... + 17664345.

Almost surely, 2^2649640575 is an apocalyptic number.

2649640575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2649640575 is a deficient number, since it is larger than the sum of its proper divisors (1731098633).

2649640575 is a wasteful number, since it uses less digits than its factorization.

2649640575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35328554 (or 35328549 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The square root of 2649640575 is about 51474.6595423418. The cubic root of 2649640575 is about 1383.7649370169.

The spelling of 2649640575 in words is "two billion, six hundred forty-nine million, six hundred forty thousand, five hundred seventy-five".