656053749 has 80 divisors (see below), whose sum is σ = 1136253888. Its totient is φ = 373621248.

The previous prime is 656053733. The next prime is 656053753. The reversal of 656053749 is 947350656.

656053749 is a `hidden beast` number, since 6 + 5 + 605 + 37 + 4 + 9 = 666.

It is not a de Polignac number, because 656053749 - 2⁴ = 656053733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656053759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1199094 + ... + 1199640.

Almost surely, 2^656053749 is an apocalyptic number.

It is an amenable number.

656053749 is a deficient number, since it is larger than the sum of its proper divisors (480200139).

656053749 is a wasteful number, since it uses less digits than its factorization.

656053749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The square root of 656053749 is about 25613.5462011803. The cubic root of 656053749 is about 868.9200273527.

The spelling of 656053749 in words is "six hundred fifty-six million, fifty-three thousand, seven hundred forty-nine".