649921762 has 8 divisors (see below), whose sum is σ = 1114151616. Its totient is φ = 278537892.

The previous prime is 649921751. The next prime is 649921799. The reversal of 649921762 is 267129946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23211478 + ... + 23211505.

It is an arithmetic number, because the mean of its divisors is an integer number (139268952).

Almost surely, 2^649921762 is an apocalyptic number.

649921762 is a deficient number, since it is larger than the sum of its proper divisors (464229854).

649921762 is a wasteful number, since it uses less digits than its factorization.

649921762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46422992.

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

The square root of 649921762 is about 25493.5631483714. The cubic root of 649921762 is about 866.2043486565.

The spelling of 649921762 in words is "six hundred forty-nine million, nine hundred twenty-one thousand, seven hundred sixty-two".