97797290 has 32 divisors (see below), whose sum is σ = 182652624. Its totient is φ = 37670400.

The previous prime is 97797289. The next prime is 97797299. The reversal of 97797290 is 9279779.

It can be written as a sum of positive squares in 8 ways, for example, as 97752769 + 44521 = 9887^2 + 211^2 .

It is not an unprimeable number, because it can be changed into a prime (97797299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36062 + ... + 38678.

Almost surely, 2^97797290 is an apocalyptic number.

97797290 is a deficient number, since it is larger than the sum of its proper divisors (84855334).

97797290 is a wasteful number, since it uses less digits than its factorization.

97797290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762.

The product of its (nonzero) digits is 500094, while the sum is 50.

The square root of 97797290 is about 9889.2512355587. The cubic root of 97797290 is about 460.7255248974.

The spelling of 97797290 in words is "ninety-seven million, seven hundred ninety-seven thousand, two hundred ninety".