649760547 has 16 divisors (see below), whose sum is σ = 880104960. Its totient is φ = 426316800.

The previous prime is 649760539. The next prime is 649760561. The reversal of 649760547 is 745067946.

It is not a de Polignac number, because 649760547 - 2³ = 649760539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 649760496 and 649760505.

It is not an unprimeable number, because it can be changed into a prime (649760047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134154 + ... + 138912.

It is an arithmetic number, because the mean of its divisors is an integer number (55006560).

Almost surely, 2^649760547 is an apocalyptic number.

649760547 is a deficient number, since it is larger than the sum of its proper divisors (230344413).

649760547 is a wasteful number, since it uses less digits than its factorization.

649760547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 649760547 is about 25490.4010756991. The cubic root of 649760547 is about 866.1327212237.

The spelling of 649760547 in words is "six hundred forty-nine million, seven hundred sixty thousand, five hundred forty-seven".