376721 has 2 divisors, whose sum is σ = 376722. Its totient is φ = 376720.

The previous prime is 376709. The next prime is 376729. The reversal of 376721 is 127673.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261121 + 115600 = 511^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 376721 - 2⁶ = 376657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (376729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188360 + 188361.

It is an arithmetic number, because the mean of its divisors is an integer number (188361).

2³⁷⁶⁷²¹ is an apocalyptic number.

It is an amenable number.

376721 is a deficient number, since it is larger than the sum of its proper divisors (1).

376721 is an equidigital number, since it uses as much as digits as its factorization.

376721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 26.

The square root of 376721 is about 613.7760177785. The cubic root of 376721 is about 72.2226262524. Note that the first 3 decimals are identical.

It can be divided in two parts, 37672 and 1, that added together give a palindrome (37673).

The spelling of 376721 in words is "three hundred seventy-six thousand, seven hundred twenty-one".