97278365 has 16 divisors (see below), whose sum is σ = 120270000. Its totient is φ = 75479040.

The previous prime is 97278359. The next prime is 97278371. The reversal of 97278365 is 56387279.

It is an interprime number because it is at equal distance from previous prime (97278359) and next prime (97278371).

It can be written as a sum of positive squares in 8 ways, for example, as 5827396 + 91450969 = 2414^2 + 9563^2 .

It is not a de Polignac number, because 97278365 - 2¹⁸ = 97016221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77261 + ... + 78509.

It is an arithmetic number, because the mean of its divisors is an integer number (7516875).

Almost surely, 2^97278365 is an apocalyptic number.

It is an amenable number.

97278365 is a deficient number, since it is larger than the sum of its proper divisors (22991635).

97278365 is a wasteful number, since it uses less digits than its factorization.

97278365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712.

The product of its digits is 635040, while the sum is 47.

The square root of 97278365 is about 9862.9795193947. The cubic root of 97278365 is about 459.9091896984.

The spelling of 97278365 in words is "ninety-seven million, two hundred seventy-eight thousand, three hundred sixty-five".