724561406244677 has 6 divisors (see below), whose sum is σ = 764703312408198. Its totient is φ = 686426595389352.

The previous prime is 724561406244667. The next prime is 724561406244691. The reversal of 724561406244677 is 776442604165427.

It can be written as a sum of positive squares in only one way, i.e., 531839654599201 + 192721751645476 = 23061649^2 + 13882426^2 .

It is a de Polignac number, because none of the positive numbers 2^k-724561406244677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724561406244617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1003547653718 + ... + 1003547654439.

It is an arithmetic number, because the mean of its divisors is an integer number (127450552068033).

Almost surely, 2^{724561406244677} is an apocalyptic number.

It is an amenable number.

724561406244677 is a deficient number, since it is larger than the sum of its proper divisors (40141906163521).

724561406244677 is a wasteful number, since it uses less digits than its factorization.

724561406244677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007095308195 (or 2007095308176 counting only the distinct ones).

The product of its (nonzero) digits is 379330560, while the sum is 65.

The spelling of 724561406244677 in words is "seven hundred twenty-four trillion, five hundred sixty-one billion, four hundred six million, two hundred forty-four thousand, six hundred seventy-seven".