649797396 has 48 divisors (see below), whose sum is σ = 1551876480. Its totient is φ = 211559040.

The previous prime is 649797383. The next prime is 649797413. The reversal of 649797396 is 693797946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89370 + ... + 96366.

It is an arithmetic number, because the mean of its divisors is an integer number (32330760).

Almost surely, 2^649797396 is an apocalyptic number.

It is an amenable number.

649797396 is an abundant number, since it is smaller than the sum of its proper divisors (902079084).

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

649797396 is a wasteful number, since it uses less digits than its factorization.

649797396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184 (or 7182 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 60.

The square root of 649797396 is about 25491.1238669463. The cubic root of 649797396 is about 866.1490941893.

The spelling of 649797396 in words is "six hundred forty-nine million, seven hundred ninety-seven thousand, three hundred ninety-six".