371416721 has 4 divisors (see below), whose sum is σ = 399987252. Its totient is φ = 342846192.

The previous prime is 371416687. The next prime is 371416723. The reversal of 371416721 is 127614173.

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

It can be written as a sum of positive squares in 2 ways, for example, as 98803600 + 272613121 = 9940^2 + 16511^2 .

It is not a de Polignac number, because 371416721 - 2¹⁸ = 371154577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (371416723) 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, 14285246 + ... + 14285271.

It is an arithmetic number, because the mean of its divisors is an integer number (99996813).

Almost surely, 2^371416721 is an apocalyptic number.

It is an amenable number.

371416721 is a deficient number, since it is larger than the sum of its proper divisors (28570531).

371416721 is a wasteful number, since it uses less digits than its factorization.

371416721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28570530.

The product of its digits is 7056, while the sum is 32.

The square root of 371416721 is about 19272.1747864635. The cubic root of 371416721 is about 718.8205490322.

The spelling of 371416721 in words is "three hundred seventy-one million, four hundred sixteen thousand, seven hundred twenty-one".