649961826 has 16 divisors (see below), whose sum is σ = 1300520928. Its totient is φ = 216554400.

The previous prime is 649961803. The next prime is 649961849. The reversal of 649961826 is 628169946.

649961826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649961803) and next prime (649961849).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10060 + ... + 37431.

It is an arithmetic number, because the mean of its divisors is an integer number (81282558).

Almost surely, 2^649961826 is an apocalyptic number.

649961826 is an abundant number, since it is smaller than the sum of its proper divisors (650559102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649961826 is a wasteful number, since it uses less digits than its factorization.

649961826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49777.

The product of its digits is 1119744, while the sum is 51.

The square root of 649961826 is about 25494.3489032374. The cubic root of 649961826 is about 866.2221471568. Note that the first 3 decimals are identical.

The spelling of 649961826 in words is "six hundred forty-nine million, nine hundred sixty-one thousand, eight hundred twenty-six".