97780111 has 8 divisors (see below), whose sum is σ = 114874704. Its totient is φ = 82053120.

The previous prime is 97780097. The next prime is 97780127. The reversal of 97780111 is 11108779.

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

It is a cyclic number.

It is not a de Polignac number, because 97780111 - 2²³ = 89391503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97780181) 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, 341746 + ... + 342031.

It is an arithmetic number, because the mean of its divisors is an integer number (14359338).

Almost surely, 2^97780111 is an apocalyptic number.

97780111 is a deficient number, since it is larger than the sum of its proper divisors (17094593).

97780111 is a wasteful number, since it uses less digits than its factorization.

97780111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683801.

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 97780111 is about 9888.3826281147. The cubic root of 97780111 is about 460.6985464155.

The spelling of 97780111 in words is "ninety-seven million, seven hundred eighty thousand, one hundred eleven".