649729996 has 12 divisors (see below), whose sum is σ = 1144659600. Its totient is φ = 322684400.

The previous prime is 649729981. The next prime is 649730041. The reversal of 649729996 is 699927946.

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, 544480 + ... + 545671.

It is an arithmetic number, because the mean of its divisors is an integer number (95388300).

Almost surely, 2^649729996 is an apocalyptic number.

It is an amenable number.

649729996 is a deficient number, since it is larger than the sum of its proper divisors (494929604).

649729996 is a wasteful number, since it uses less digits than its factorization.

649729996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090304 (or 1090302 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 61.

The square root of 649729996 is about 25489.8018038587. The cubic root of 649729996 is about 866.1191461533.

The spelling of 649729996 in words is "six hundred forty-nine million, seven hundred twenty-nine thousand, nine hundred ninety-six".