721735414 has 4 divisors (see below), whose sum is σ = 1082603124. Its totient is φ = 360867706.

The previous prime is 721735403. The next prime is 721735447. The reversal of 721735414 is 414537127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 414537127 = 59 ⋅7026053.

It is a self number, because there is not a number n which added to its sum of digits gives 721735414.

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, 180433852 + ... + 180433855.

It is an arithmetic number, because the mean of its divisors is an integer number (270650781).

Almost surely, 2^721735414 is an apocalyptic number.

721735414 is a deficient number, since it is larger than the sum of its proper divisors (360867710).

721735414 is a wasteful number, since it uses less digits than its factorization.

721735414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360867709.

The product of its digits is 23520, while the sum is 34.

The square root of 721735414 is about 26865.1337982896. The cubic root of 721735414 is about 897.0004726931. Note that the first 3 decimals are identical.

The spelling of 721735414 in words is "seven hundred twenty-one million, seven hundred thirty-five thousand, four hundred fourteen".