97920771 has 8 divisors (see below), whose sum is σ = 140604240. Its totient is φ = 60258912.

The previous prime is 97920769. The next prime is 97920793. The reversal of 97920771 is 17702979.

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

It is not a de Polignac number, because 97920771 - 2¹ = 97920769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97920721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1255356 + ... + 1255433.

It is an arithmetic number, because the mean of its divisors is an integer number (17575530).

Almost surely, 2^97920771 is an apocalyptic number.

97920771 is a deficient number, since it is larger than the sum of its proper divisors (42683469).

97920771 is a wasteful number, since it uses less digits than its factorization.

97920771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510805.

The product of its (nonzero) digits is 55566, while the sum is 42.

The square root of 97920771 is about 9895.4924586905. The cubic root of 97920771 is about 460.9193507231.

The spelling of 97920771 in words is "ninety-seven million, nine hundred twenty thousand, seven hundred seventy-one".