697772623 has 2 divisors, whose sum is σ = 697772624. Its totient is φ = 697772622.

The previous prime is 697772591. The next prime is 697772651. The reversal of 697772623 is 326277796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697772623 - 2⁵ = 697772591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697773623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348886311 + 348886312.

It is an arithmetic number, because the mean of its divisors is an integer number (348886312).

Almost surely, 2^697772623 is an apocalyptic number.

697772623 is a deficient number, since it is larger than the sum of its proper divisors (1).

697772623 is an equidigital number, since it uses as much as digits as its factorization.

697772623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 49.

The square root of 697772623 is about 26415.3861035571. The cubic root of 697772623 is about 886.9612406363.

The spelling of 697772623 in words is "six hundred ninety-seven million, seven hundred seventy-two thousand, six hundred twenty-three".