721230675 has 48 divisors (see below), whose sum is σ = 1303630848. Its totient is φ = 348937600.

The previous prime is 721230649. The next prime is 721230689. The reversal of 721230675 is 576032127.

It is not a de Polignac number, because 721230675 - 2⁷ = 721230547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711469 + ... + 712481.

It is an arithmetic number, because the mean of its divisors is an integer number (27158976).

Almost surely, 2^721230675 is an apocalyptic number.

721230675 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

721230675 is a deficient number, since it is larger than the sum of its proper divisors (582400173).

721230675 is a wasteful number, since it uses less digits than its factorization.

721230675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 721230675 is about 26855.7382136481. The cubic root of 721230675 is about 896.7913209291.

The spelling of 721230675 in words is "seven hundred twenty-one million, two hundred thirty thousand, six hundred seventy-five".