97785079 has 4 divisors (see below), whose sum is σ = 111754384. Its totient is φ = 83815776.

The previous prime is 97785073. The next prime is 97785089. The reversal of 97785079 is 97058779.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97785079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97785073) 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, 6984642 + ... + 6984655.

It is an arithmetic number, because the mean of its divisors is an integer number (27938596).

Almost surely, 2^97785079 is an apocalyptic number.

97785079 is a deficient number, since it is larger than the sum of its proper divisors (13969305).

97785079 is a wasteful number, since it uses less digits than its factorization.

97785079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13969304.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The square root of 97785079 is about 9888.6338287956. The cubic root of 97785079 is about 460.7063486553.

The spelling of 97785079 in words is "ninety-seven million, seven hundred eighty-five thousand, seventy-nine".