373006721 has 4 divisors (see below), whose sum is σ = 373270272. Its totient is φ = 372743172.

The previous prime is 373006717. The next prime is 373006759. The reversal of 373006721 is 127600373.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 127600373 = 2777 ⋅45949.

It is a cyclic number.

It is not a de Polignac number, because 373006721 - 2² = 373006717 is a prime.

It is a super-2 number, since 2×373006721² = 278268027822343682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (373006771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129641 + ... + 132486.

It is an arithmetic number, because the mean of its divisors is an integer number (93317568).

Almost surely, 2^373006721 is an apocalyptic number.

It is an amenable number.

373006721 is a deficient number, since it is larger than the sum of its proper divisors (263551).

373006721 is a wasteful number, since it uses less digits than its factorization.

373006721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263550.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 373006721 is about 19313.3819151385. The cubic root of 373006721 is about 719.8448231683.

The spelling of 373006721 in words is "three hundred seventy-three million, six thousand, seven hundred twenty-one".