649000696437 has 48 divisors (see below), whose sum is σ = 978681832128. Its totient is φ = 429773921280.

The previous prime is 649000696433. The next prime is 649000696441. The reversal of 649000696437 is 734696000946.

649000696437 is a `hidden beast` number, since 6 + 490 + 0 + 0 + 69 + 64 + 37 = 666.

It is an interprime number because it is at equal distance from previous prime (649000696433) and next prime (649000696441).

It is not a de Polignac number, because 649000696437 - 2² = 649000696433 is a prime.

It is a super-2 number, since 2×649000696437² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649000696433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32021887 + ... + 32042147.

It is an arithmetic number, because the mean of its divisors is an integer number (20389204836).

Almost surely, 2^649000696437 is an apocalyptic number.

It is an amenable number.

649000696437 is a deficient number, since it is larger than the sum of its proper divisors (329681135691).

649000696437 is a wasteful number, since it uses less digits than its factorization.

649000696437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21152 (or 21140 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 649000696437 in words is "six hundred forty-nine billion, six hundred ninety-six thousand, four hundred thirty-seven".