721674474376463 has 8 divisors (see below), whose sum is σ = 732447899807232. Its totient is φ = 710901112611096.

The previous prime is 721674474376439. The next prime is 721674474376507. The reversal of 721674474376463 is 364673474476127.

It is a happy number.

721674474376463 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 721674474376463 - 2¹² = 721674474372367 is a prime.

It is a super-3 number, since 3×721674474376463³ (a number of 46 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721674474376423) 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, 7171856 + ... + 38662442.

It is an arithmetic number, because the mean of its divisors is an integer number (91555987475904).

Almost surely, 2^{721674474376463} is an apocalyptic number.

721674474376463 is a deficient number, since it is larger than the sum of its proper divisors (10773425430769).

721674474376463 is a wasteful number, since it uses less digits than its factorization.

721674474376463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31832701.

The product of its digits is 2389782528, while the sum is 71.

The spelling of 721674474376463 in words is "seven hundred twenty-one trillion, six hundred seventy-four billion, four hundred seventy-four million, three hundred seventy-six thousand, four hundred sixty-three".