976621 has 2 divisors, whose sum is σ = 976622. Its totient is φ = 976620.

The previous prime is 976607. The next prime is 976637. The reversal of 976621 is 126679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 35721 = 970^2 + 189^2 .

It is a cyclic number.

It is not a de Polignac number, because 976621 - 2⁹ = 976109 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (976601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488310 + 488311.

It is an arithmetic number, because the mean of its divisors is an integer number (488311).

2⁹⁷⁶⁶²¹ is an apocalyptic number.

It is an amenable number.

976621 is a deficient number, since it is larger than the sum of its proper divisors (1).

976621 is an equidigital number, since it uses as much as digits as its factorization.

976621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 976621 is about 988.2413672783. The cubic root of 976621 is about 99.2145467850.

The spelling of 976621 in words is "nine hundred seventy-six thousand, six hundred twenty-one".