724106641 has 4 divisors (see below), whose sum is σ = 724245732. Its totient is φ = 723967552.

The previous prime is 724106623. The next prime is 724106657. The reversal of 724106641 is 146601427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90326016 + 633780625 = 9504^2 + 25175^2 .

It is a cyclic number.

It is not a de Polignac number, because 724106641 - 2¹³ = 724098449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724106671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61420 + ... + 72253.

It is an arithmetic number, because the mean of its divisors is an integer number (181061433).

Almost surely, 2^724106641 is an apocalyptic number.

It is an amenable number.

724106641 is a deficient number, since it is larger than the sum of its proper divisors (139091).

724106641 is a wasteful number, since it uses less digits than its factorization.

724106641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139090.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 724106641 is about 26909.2296619580. The cubic root of 724106641 is about 897.9817494716.

The spelling of 724106641 in words is "seven hundred twenty-four million, one hundred six thousand, six hundred forty-one".