97678657087 has 8 divisors (see below), whose sum is σ = 106943226192. Its totient is φ = 88478203200.

The previous prime is 97678657057. The next prime is 97678657091. The reversal of 97678657087 is 78075687679.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97678657087 is a prime.

It is a super-2 number, since 2×97678657087² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97678657057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16025614 + ... + 16031707.

It is an arithmetic number, because the mean of its divisors is an integer number (13367903274).

Almost surely, 2^97678657087 is an apocalyptic number.

97678657087 is a deficient number, since it is larger than the sum of its proper divisors (9264569105).

97678657087 is a wasteful number, since it uses less digits than its factorization.

97678657087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32057609.

The product of its (nonzero) digits is 248935680, while the sum is 70.

The spelling of 97678657087 in words is "ninety-seven billion, six hundred seventy-eight million, six hundred fifty-seven thousand, eighty-seven".