97678697 has 4 divisors (see below), whose sum is σ = 99136656. Its totient is φ = 96220740.

The previous prime is 97678673. The next prime is 97678717. The reversal of 97678697 is 79687679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79687679 = 29 ⋅2747851.

It is a cyclic number.

It is not a de Polignac number, because 97678697 - 2¹⁰ = 97677673 is a prime.

It is a super-2 number, since 2×97678697² = 19082255695235618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97678667) 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, 728879 + ... + 729012.

It is an arithmetic number, because the mean of its divisors is an integer number (24784164).

Almost surely, 2^97678697 is an apocalyptic number.

It is an amenable number.

97678697 is a deficient number, since it is larger than the sum of its proper divisors (1457959).

97678697 is a wasteful number, since it uses less digits than its factorization.

97678697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457958.

The product of its digits is 8001504, while the sum is 59.

The square root of 97678697 is about 9883.2533611155. The cubic root of 97678697 is about 460.5392180212.

The spelling of 97678697 in words is "ninety-seven million, six hundred seventy-eight thousand, six hundred ninety-seven".