997753902 has 64 divisors (see below), whose sum is σ = 2155507200. Its totient is φ = 306775040.

The previous prime is 997753891. The next prime is 997753907. The reversal of 997753902 is 209357799.

It is a happy number.

997753902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997753907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1188799 + ... + 1189637.

It is an arithmetic number, because the mean of its divisors is an integer number (33679800).

Almost surely, 2^997753902 is an apocalyptic number.

997753902 is an abundant number, since it is smaller than the sum of its proper divisors (1157753298).

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

997753902 is a wasteful number, since it uses less digits than its factorization.

997753902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081.

The product of its (nonzero) digits is 1071630, while the sum is 51.

The square root of 997753902 is about 31587.2427096763. The cubic root of 997753902 is about 999.2507394155.

The spelling of 997753902 in words is "nine hundred ninety-seven million, seven hundred fifty-three thousand, nine hundred two".