997505799 has 8 divisors (see below), whose sum is σ = 1348227312. Its totient is φ = 655894080.

The previous prime is 997505783. The next prime is 997505801.

997505799 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997505799 - 2⁴ = 997505783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997505759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277192 + ... + 2277629.

It is an arithmetic number, because the mean of its divisors is an integer number (168528414).

Almost surely, 2^997505799 is an apocalyptic number.

997505799 is a deficient number, since it is larger than the sum of its proper divisors (350721513).

997505799 is a wasteful number, since it uses less digits than its factorization.

997505799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554897.

The product of its (nonzero) digits is 8037225, while the sum is 60.

The square root of 997505799 is about 31583.3151996430. The cubic root of 997505799 is about 999.1679074807.

The spelling of 997505799 in words is "nine hundred ninety-seven million, five hundred five thousand, seven hundred ninety-nine".