975487691 has 2 divisors, whose sum is σ = 975487692. Its totient is φ = 975487690.

The previous prime is 975487627. The next prime is 975487717. The reversal of 975487691 is 196784579.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 975487691 - 2⁶ = 975487627 is a prime.

It is a super-2 number, since 2×975487691² = 1903152470585022962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (975487091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487743845 + 487743846.

It is an arithmetic number, because the mean of its divisors is an integer number (487743846).

Almost surely, 2^975487691 is an apocalyptic number.

975487691 is a deficient number, since it is larger than the sum of its proper divisors (1).

975487691 is an equidigital number, since it uses as much as digits as its factorization.

975487691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 56.

The square root of 975487691 is about 31232.7983216362. The cubic root of 975487691 is about 991.7615445727.

The spelling of 975487691 in words is "nine hundred seventy-five million, four hundred eighty-seven thousand, six hundred ninety-one".