97782782 has 8 divisors (see below), whose sum is σ = 146976816. Its totient is φ = 48790512.

The previous prime is 97782781. The next prime is 97782851. The reversal of 97782782 is 28728779.

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

It is a super-2 number, since 2×97782782² = 19122944911319048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97782782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97782781) 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, 49223 + ... + 51170.

It is an arithmetic number, because the mean of its divisors is an integer number (18372102).

Almost surely, 2^97782782 is an apocalyptic number.

97782782 is a deficient number, since it is larger than the sum of its proper divisors (49194034).

97782782 is a wasteful number, since it uses less digits than its factorization.

97782782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100882.

The product of its digits is 790272, while the sum is 50.

The square root of 97782782 is about 9888.5176846684. The cubic root of 97782782 is about 460.7027412516.

The spelling of 97782782 in words is "ninety-seven million, seven hundred eighty-two thousand, seven hundred eighty-two".