997764950 has 72 divisors (see below), whose sum is σ = 2324976192. Its totient is φ = 315766080.

The previous prime is 997764947. The next prime is 997764953. The reversal of 997764950 is 59467799.

It is an interprime number because it is at equal distance from previous prime (997764947) and next prime (997764953).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997764953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16187 + ... + 47513.

It is an arithmetic number, because the mean of its divisors is an integer number (32291336).

Almost surely, 2^997764950 is an apocalyptic number.

997764950 is an abundant number, since it is smaller than the sum of its proper divisors (1327211242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997764950 is a wasteful number, since it uses less digits than its factorization.

997764950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31366 (or 31354 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 56.

The square root of 997764950 is about 31587.4175899202. The cubic root of 997764950 is about 999.2544275933.

The spelling of 997764950 in words is "nine hundred ninety-seven million, seven hundred sixty-four thousand, nine hundred fifty".