649785033 has 24 divisors (see below), whose sum is σ = 1006387200. Its totient is φ = 402539904.

The previous prime is 649785013. The next prime is 649785053. The reversal of 649785033 is 330587946.

It is an interprime number because it is at equal distance from previous prime (649785013) and next prime (649785053).

It is not a de Polignac number, because 649785033 - 2⁵ = 649785001 is a prime.

It is a super-2 number, since 2×649785033² = 844441178221622178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 649785033.

It is not an unprimeable number, because it can be changed into a prime (649785013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14793 + ... + 38966.

It is an arithmetic number, because the mean of its divisors is an integer number (41932800).

Almost surely, 2^649785033 is an apocalyptic number.

It is an amenable number.

649785033 is a deficient number, since it is larger than the sum of its proper divisors (356602167).

649785033 is a wasteful number, since it uses less digits than its factorization.

649785033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53861 (or 53858 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 649785033 is about 25490.8813696192. The cubic root of 649785033 is about 866.1436010570.

The spelling of 649785033 in words is "six hundred forty-nine million, seven hundred eighty-five thousand, thirty-three".