649774754701 has 16 divisors (see below), whose sum is σ = 674157743424. Its totient is φ = 625817453184.

The previous prime is 649774754659. The next prime is 649774754731. The reversal of 649774754701 is 107457477946.

It is a cyclic number.

It is not a de Polignac number, because 649774754701 - 2¹⁵ = 649774721933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 649774754701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649774754731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14155950 + ... + 14201776.

It is an arithmetic number, because the mean of its divisors is an integer number (42134858964).

Almost surely, 2^649774754701 is an apocalyptic number.

It is an amenable number.

649774754701 is a deficient number, since it is larger than the sum of its proper divisors (24382988723).

649774754701 is a wasteful number, since it uses less digits than its factorization.

649774754701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50460.

The product of its (nonzero) digits is 41489280, while the sum is 61.

The spelling of 649774754701 in words is "six hundred forty-nine billion, seven hundred seventy-four million, seven hundred fifty-four thousand, seven hundred one".