977671 has 2 divisors, whose sum is σ = 977672. Its totient is φ = 977670.

The previous prime is 977629. The next prime is 977681. The reversal of 977671 is 176779.

It is a strong prime.

It is an emirp because it is prime and its reverse (176779) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-977671 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 977671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488835 + 488836.

It is an arithmetic number, because the mean of its divisors is an integer number (488836).

2⁹⁷⁷⁶⁷¹ is an apocalyptic number.

977671 is a deficient number, since it is larger than the sum of its proper divisors (1).

977671 is an equidigital number, since it uses as much as digits as its factorization.

977671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 37.

The square root of 977671 is about 988.7724712996. The cubic root of 977671 is about 99.2500904135.

The spelling of 977671 in words is "nine hundred seventy-seven thousand, six hundred seventy-one".