649101477 has 8 divisors (see below), whose sum is σ = 866052000. Its totient is φ = 432442640.

The previous prime is 649101451. The next prime is 649101491. The reversal of 649101477 is 774101946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 649101477 - 2⁸ = 649101221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649105477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67674 + ... + 76667.

It is an arithmetic number, because the mean of its divisors is an integer number (108256500).

Almost surely, 2^649101477 is an apocalyptic number.

It is an amenable number.

649101477 is a deficient number, since it is larger than the sum of its proper divisors (216950523).

649101477 is a wasteful number, since it uses less digits than its factorization.

649101477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145843.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 649101477 is about 25477.4699882072. The cubic root of 649101477 is about 865.8397747370.

The spelling of 649101477 in words is "six hundred forty-nine million, one hundred one thousand, four hundred seventy-seven".