720231654749 has 4 divisors (see below), whose sum is σ = 721025736864. Its totient is φ = 719437572636.

The previous prime is 720231654683. The next prime is 720231654773. The reversal of 720231654749 is 947456132027.

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 a de Polignac number, because none of the positive numbers 2^k-720231654749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 720231654697 and 720231654706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720231354749) 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, 397039697 + ... + 397041510.

It is an arithmetic number, because the mean of its divisors is an integer number (180256434216).

Almost surely, 2^720231654749 is an apocalyptic number.

It is an amenable number.

720231654749 is a deficient number, since it is larger than the sum of its proper divisors (794082115).

720231654749 is an equidigital number, since it uses as much as digits as its factorization.

720231654749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794082114.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 720231654749 in words is "seven hundred twenty billion, two hundred thirty-one million, six hundred fifty-four thousand, seven hundred forty-nine".