674476649 has 64 divisors (see below), whose sum is σ = 958832640. Its totient is φ = 457850880.

The previous prime is 674476591. The next prime is 674476667. The reversal of 674476649 is 946674476.

It is a cyclic number.

It is not a de Polignac number, because 674476649 - 2²⁰ = 673428073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674476649.

It is not an unprimeable number, because it can be changed into a prime (674476249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1168649 + ... + 1169225.

It is an arithmetic number, because the mean of its divisors is an integer number (14981760).

Almost surely, 2^674476649 is an apocalyptic number.

It is an amenable number.

674476649 is a deficient number, since it is larger than the sum of its proper divisors (284355991).

674476649 is a wasteful number, since it uses less digits than its factorization.

674476649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its digits is 6096384, while the sum is 53.

The square root of 674476649 is about 25970.6882658123. The cubic root of 674476649 is about 876.9785535716.

The spelling of 674476649 in words is "six hundred seventy-four million, four hundred seventy-six thousand, six hundred forty-nine".