997625383 has 2 divisors, whose sum is σ = 997625384. Its totient is φ = 997625382.

The previous prime is 997625371. The next prime is 997625401. The reversal of 997625383 is 383526799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997625383 - 2⁹ = 997624871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997625383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997625323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498812691 + 498812692.

It is an arithmetic number, because the mean of its divisors is an integer number (498812692).

Almost surely, 2^997625383 is an apocalyptic number.

997625383 is a deficient number, since it is larger than the sum of its proper divisors (1).

997625383 is an equidigital number, since it uses as much as digits as its factorization.

997625383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 52.

The square root of 997625383 is about 31585.2082943900. The cubic root of 997625383 is about 999.2078336382.

The spelling of 997625383 in words is "nine hundred ninety-seven million, six hundred twenty-five thousand, three hundred eighty-three".