721614476 has 36 divisors (see below), whose sum is σ = 1420385736. Its totient is φ = 320369280.

The previous prime is 721614461. The next prime is 721614479. The reversal of 721614476 is 674416127.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721614479) 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, 3476 + ... + 38148.

Almost surely, 2^721614476 is an apocalyptic number.

It is an amenable number.

721614476 is a deficient number, since it is larger than the sum of its proper divisors (698771260).

721614476 is a wasteful number, since it uses less digits than its factorization.

721614476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34742 (or 34729 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 721614476 is about 26862.8828683743. The cubic root of 721614476 is about 896.9503677651.

The spelling of 721614476 in words is "seven hundred twenty-one million, six hundred fourteen thousand, four hundred seventy-six".