721061332 has 12 divisors (see below), whose sum is σ = 1263292576. Its totient is φ = 360120600.

The previous prime is 721061311. The next prime is 721061347. The reversal of 721061332 is 233160127.

It is a super-2 number, since 2×721061332² = 1039858889011228448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 721061297 and 721061306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98544 + ... + 105607.

Almost surely, 2^721061332 is an apocalyptic number.

It is an amenable number.

721061332 is a deficient number, since it is larger than the sum of its proper divisors (542231244).

721061332 is a wasteful number, since it uses less digits than its factorization.

721061332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205038 (or 205036 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 721061332 is about 26852.5852014289. The cubic root of 721061332 is about 896.7211273810.

The spelling of 721061332 in words is "seven hundred twenty-one million, sixty-one thousand, three hundred thirty-two".