997803782 has 8 divisors (see below), whose sum is σ = 1501428096. Its totient is φ = 497327752.

The previous prime is 997803769. The next prime is 997803787. The reversal of 997803782 is 287308799.

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

It is a super-2 number, since 2×997803782² = 1991224774747007048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997803787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786278 + ... + 787545.

It is an arithmetic number, because the mean of its divisors is an integer number (187678512).

Almost surely, 2^997803782 is an apocalyptic number.

997803782 is a deficient number, since it is larger than the sum of its proper divisors (503624314).

997803782 is a wasteful number, since it uses less digits than its factorization.

997803782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574142.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 997803782 is about 31588.0322590693. The cubic root of 997803782 is about 999.2673907481.

The spelling of 997803782 in words is "nine hundred ninety-seven million, eight hundred three thousand, seven hundred eighty-two".