721932463 has 4 divisors (see below), whose sum is σ = 825065680. Its totient is φ = 618799248.

The previous prime is 721932457. The next prime is 721932481. The reversal of 721932463 is 364239127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 721932463 - 2¹⁷ = 721801391 is a prime.

It is a super-2 number, since 2×721932463² = 1042372962266492738, which contains 22 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 (721933463) 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, 51566598 + ... + 51566611.

It is an arithmetic number, because the mean of its divisors is an integer number (206266420).

Almost surely, 2^721932463 is an apocalyptic number.

721932463 is a deficient number, since it is larger than the sum of its proper divisors (103133217).

721932463 is a wasteful number, since it uses less digits than its factorization.

721932463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103133216.

The product of its digits is 54432, while the sum is 37.

The square root of 721932463 is about 26868.8009222593. The cubic root of 721932463 is about 897.0820986183.

The spelling of 721932463 in words is "seven hundred twenty-one million, nine hundred thirty-two thousand, four hundred sixty-three".