997633059 has 4 divisors (see below), whose sum is σ = 1330177416. Its totient is φ = 665088704.

The previous prime is 997633009. The next prime is 997633079. The reversal of 997633059 is 950336799.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 997633059 - 2⁷ = 997632931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997633009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166272174 + ... + 166272179.

It is an arithmetic number, because the mean of its divisors is an integer number (332544354).

Almost surely, 2^997633059 is an apocalyptic number.

997633059 is a deficient number, since it is larger than the sum of its proper divisors (332544357).

997633059 is a wasteful number, since it uses less digits than its factorization.

997633059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332544356.

The product of its (nonzero) digits is 1377810, while the sum is 51.

The square root of 997633059 is about 31585.3298067315. The cubic root of 997633059 is about 999.2103963569.

The spelling of 997633059 in words is "nine hundred ninety-seven million, six hundred thirty-three thousand, fifty-nine".