649595451 has 16 divisors (see below), whose sum is σ = 873886464. Its totient is φ = 429200544.

The previous prime is 649595423. The next prime is 649595459. The reversal of 649595451 is 154595946.

It is not a de Polignac number, because 649595451 - 2¹³ = 649587259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 649595451.

It is not an unprimeable number, because it can be changed into a prime (649595459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178290 + ... + 181896.

It is an arithmetic number, because the mean of its divisors is an integer number (54617904).

Almost surely, 2^649595451 is an apocalyptic number.

649595451 is a deficient number, since it is larger than the sum of its proper divisors (224291013).

649595451 is a wasteful number, since it uses less digits than its factorization.

649595451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130.

The product of its digits is 972000, while the sum is 48.

The square root of 649595451 is about 25487.1624744694. The cubic root of 649595451 is about 866.0593571918.

The spelling of 649595451 in words is "six hundred forty-nine million, five hundred ninety-five thousand, four hundred fifty-one".