649712774 has 16 divisors (see below), whose sum is σ = 986370048. Its totient is φ = 320939592.

The previous prime is 649712761. The next prime is 649712797. The reversal of 649712774 is 477217946.

It is a happy number.

649712774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77999 + ... + 85925.

It is an arithmetic number, because the mean of its divisors is an integer number (61648128).

Almost surely, 2^649712774 is an apocalyptic number.

649712774 is a deficient number, since it is larger than the sum of its proper divisors (336657274).

649712774 is a wasteful number, since it uses less digits than its factorization.

649712774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419.

The product of its digits is 592704, while the sum is 47.

The square root of 649712774 is about 25489.4639802409. The cubic root of 649712774 is about 866.1114935202. Note that the first 3 decimals are identical.

The spelling of 649712774 in words is "six hundred forty-nine million, seven hundred twelve thousand, seven hundred seventy-four".