721860798 has 16 divisors (see below), whose sum is σ = 1445164560. Its totient is φ = 240379776.

The previous prime is 721860791. The next prime is 721860847. The reversal of 721860798 is 897068127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721860791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53565 + ... + 65672.

It is an arithmetic number, because the mean of its divisors is an integer number (90322785).

Almost surely, 2^721860798 is an apocalyptic number.

721860798 is an abundant number, since it is smaller than the sum of its proper divisors (723303762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

721860798 is a wasteful number, since it uses less digits than its factorization.

721860798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120251.

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 721860798 is about 26867.4672792208. The cubic root of 721860798 is about 897.0524137012.

The spelling of 721860798 in words is "seven hundred twenty-one million, eight hundred sixty thousand, seven hundred ninety-eight".