649049096 has 8 divisors (see below), whose sum is σ = 1216967070. Its totient is φ = 324524544.

The previous prime is 649049083. The next prime is 649049099. The reversal of 649049096 is 690940946.

It can be written as a sum of positive squares in only one way, i.e., 573602500 + 75446596 = 23950^2 + 8686^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 649049096.

It is not an unprimeable number, because it can be changed into a prime (649049099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40565561 + ... + 40565576.

Almost surely, 2^649049096 is an apocalyptic number.

It is an amenable number.

649049096 is a deficient number, since it is larger than the sum of its proper divisors (567917974).

649049096 is a wasteful number, since it uses less digits than its factorization.

649049096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81131143 (or 81131139 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 649049096 is about 25476.4419807790. The cubic root of 649049096 is about 865.8164836826.

The spelling of 649049096 in words is "six hundred forty-nine million, forty-nine thousand, ninety-six".