723760649 has 4 divisors (see below), whose sum is σ = 740592336. Its totient is φ = 706928964.

The previous prime is 723760637. The next prime is 723760657. The reversal of 723760649 is 946067327.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 723760649 - 2²⁸ = 455325193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723760679) 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, 8415779 + ... + 8415864.

It is an arithmetic number, because the mean of its divisors is an integer number (185148084).

Almost surely, 2^723760649 is an apocalyptic number.

It is an amenable number.

723760649 is a deficient number, since it is larger than the sum of its proper divisors (16831687).

723760649 is a wasteful number, since it uses less digits than its factorization.

723760649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16831686.

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 723760649 is about 26902.8000215591. The cubic root of 723760649 is about 897.8387024017.

The spelling of 723760649 in words is "seven hundred twenty-three million, seven hundred sixty thousand, six hundred forty-nine".