721476963 has 12 divisors (see below), whose sum is σ = 1080731288. Its totient is φ = 480984480.

The previous prime is 721476961. The next prime is 721476983. The reversal of 721476963 is 369674127.

It is not a de Polignac number, because 721476963 - 2¹ = 721476961 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721476961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1484278 + ... + 1484763.

Almost surely, 2^721476963 is an apocalyptic number.

721476963 is a deficient number, since it is larger than the sum of its proper divisors (359254325).

721476963 is an equidigital number, since it uses as much as digits as its factorization.

721476963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969056 (or 2969044 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 721476963 is about 26860.3232110114. The cubic root of 721476963 is about 896.8933889693.

The spelling of 721476963 in words is "seven hundred twenty-one million, four hundred seventy-six thousand, nine hundred sixty-three".