977690471 has 2 divisors, whose sum is σ = 977690472. Its totient is φ = 977690470.

The previous prime is 977690419. The next prime is 977690473. The reversal of 977690471 is 174096779.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 977690471 - 2⁶ = 977690407 is a prime.

It is a super-3 number, since 3×977690471³ (a number of 28 digits) contains 333 as substring.

Together with 977690473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977690473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488845235 + 488845236.

It is an arithmetic number, because the mean of its divisors is an integer number (488845236).

Almost surely, 2^977690471 is an apocalyptic number.

977690471 is a deficient number, since it is larger than the sum of its proper divisors (1).

977690471 is an equidigital number, since it uses as much as digits as its factorization.

977690471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 977690471 is about 31268.0423275906. The cubic root of 977690471 is about 992.5074928743.

The spelling of 977690471 in words is "nine hundred seventy-seven million, six hundred ninety thousand, four hundred seventy-one".