649061312 has 14 divisors (see below), whose sum is σ = 1287981168. Its totient is φ = 324530624.

The previous prime is 649061297. The next prime is 649061317. The reversal of 649061312 is 213160946.

It is a super-2 number, since 2×649061312² = 842561173470322688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649061317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5070728 + ... + 5070855.

Almost surely, 2^649061312 is an apocalyptic number.

It is an amenable number.

649061312 is a deficient number, since it is larger than the sum of its proper divisors (638919856).

649061312 is a wasteful number, since it uses less digits than its factorization.

649061312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141595 (or 10141585 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 649061312 is about 25476.6817305551. The cubic root of 649061312 is about 865.8219156024.

The spelling of 649061312 in words is "six hundred forty-nine million, sixty-one thousand, three hundred twelve".