97678685 has 16 divisors (see below), whose sum is σ = 133657776. Its totient is φ = 67888128.

The previous prime is 97678673. The next prime is 97678717. The reversal of 97678685 is 58687679.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5480281 + 92198404 = 2341^2 + 9602^2 .

It is a cyclic number.

It is not a de Polignac number, because 97678685 - 2²² = 93484381 is a prime.

It is a super-2 number, since 2×97678685² = 19082251006658450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97678685.

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, 43094 + ... + 45303.

It is an arithmetic number, because the mean of its divisors is an integer number (8353611).

Almost surely, 2^97678685 is an apocalyptic number.

It is an amenable number.

97678685 is a deficient number, since it is larger than the sum of its proper divisors (35979091).

97678685 is a wasteful number, since it uses less digits than its factorization.

97678685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88432.

The product of its digits is 5080320, while the sum is 56.

The square root of 97678685 is about 9883.2527540279. The cubic root of 97678685 is about 460.5391991618.

The spelling of 97678685 in words is "ninety-seven million, six hundred seventy-eight thousand, six hundred eighty-five".