997672499 has 2 divisors, whose sum is σ = 997672500. Its totient is φ = 997672498.

The previous prime is 997672483. The next prime is 997672537. The reversal of 997672499 is 994276799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997672499 - 2⁴ = 997672483 is a prime.

It is not a weakly prime, because it can be changed into another prime (997672469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498836249 + 498836250.

It is an arithmetic number, because the mean of its divisors is an integer number (498836250).

Almost surely, 2^997672499 is an apocalyptic number.

997672499 is a deficient number, since it is larger than the sum of its proper divisors (1).

997672499 is an equidigital number, since it uses as much as digits as its factorization.

997672499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 62.

The square root of 997672499 is about 31585.9541410419. The cubic root of 997672499 is about 999.2235636359.

The spelling of 997672499 in words is "nine hundred ninety-seven million, six hundred seventy-two thousand, four hundred ninety-nine".