649983354 has 32 divisors (see below), whose sum is σ = 1315751424. Its totient is φ = 214040880.

The previous prime is 649983319. The next prime is 649983371. The reversal of 649983354 is 453389946.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 649983297 and 649983306.

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, 322209 + ... + 324219.

It is an arithmetic number, because the mean of its divisors is an integer number (41117232).

Almost surely, 2^649983354 is an apocalyptic number.

649983354 is an abundant number, since it is smaller than the sum of its proper divisors (665768070).

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

649983354 is a wasteful number, since it uses less digits than its factorization.

649983354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642.

The product of its digits is 2799360, while the sum is 51.

The square root of 649983354 is about 25494.7711109553. The cubic root of 649983354 is about 866.2317107054.

The spelling of 649983354 in words is "six hundred forty-nine million, nine hundred eighty-three thousand, three hundred fifty-four".