649126792 has 32 divisors (see below), whose sum is σ = 1336881600. Its totient is φ = 294110784.

The previous prime is 649126787. The next prime is 649126837. The reversal of 649126792 is 297621946.

It is a super-2 number, since 2×649126792² = 842731184184422528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 89343 + ... + 96334.

It is an arithmetic number, because the mean of its divisors is an integer number (41777550).

Almost surely, 2^649126792 is an apocalyptic number.

It is an amenable number.

649126792 is an abundant number, since it is smaller than the sum of its proper divisors (687754808).

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

649126792 is a wasteful number, since it uses less digits than its factorization.

649126792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185725 (or 185721 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 649126792 is about 25477.9667948602. The cubic root of 649126792 is about 865.8510305266.

The spelling of 649126792 in words is "six hundred forty-nine million, one hundred twenty-six thousand, seven hundred ninety-two".