721495046 has 4 divisors (see below), whose sum is σ = 1082242572. Its totient is φ = 360747522.

The previous prime is 721495009. The next prime is 721495067. The reversal of 721495046 is 640594127.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180373760 + ... + 180373763.

It is an arithmetic number, because the mean of its divisors is an integer number (270560643).

Almost surely, 2^721495046 is an apocalyptic number.

721495046 is a deficient number, since it is larger than the sum of its proper divisors (360747526).

721495046 is a wasteful number, since it uses less digits than its factorization.

721495046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360747525.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 721495046 is about 26860.6598206373. The cubic root of 721495046 is about 896.9008821111.

The spelling of 721495046 in words is "seven hundred twenty-one million, four hundred ninety-five thousand, forty-six".