649974283 has 8 divisors (see below), whose sum is σ = 760103168. Its totient is φ = 544164264.

The previous prime is 649974263. The next prime is 649974313. The reversal of 649974283 is 382479946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 649974283 - 2⁵ = 649974251 is a prime.

It is a super-2 number, since 2×649974283² = 844933137122728178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 649974283.

It is not an unprimeable number, because it can be changed into a prime (649974223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1079391 + ... + 1079992.

It is an arithmetic number, because the mean of its divisors is an integer number (95012896).

Almost surely, 2^649974283 is an apocalyptic number.

649974283 is a deficient number, since it is larger than the sum of its proper divisors (110128885).

649974283 is a wasteful number, since it uses less digits than its factorization.

649974283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159433.

The product of its digits is 2612736, while the sum is 52.

The square root of 649974283 is about 25494.5932111105. The cubic root of 649974283 is about 866.2276810512.

The spelling of 649974283 in words is "six hundred forty-nine million, nine hundred seventy-four thousand, two hundred eighty-three".