87967997 has 8 divisors (see below), whose sum is σ = 96341280. Its totient is φ = 79824240.

The previous prime is 87967963. The next prime is 87968009. The reversal of 87967997 is 79976978.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87967997 - 2¹⁴ = 87951613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87967927) 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, 56579 + ... + 58112.

It is an arithmetic number, because the mean of its divisors is an integer number (12042660).

Almost surely, 2^87967997 is an apocalyptic number.

It is an amenable number.

87967997 is a deficient number, since it is larger than the sum of its proper divisors (8373283).

87967997 is a wasteful number, since it uses less digits than its factorization.

87967997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114763.

The product of its digits is 12002256, while the sum is 62.

The square root of 87967997 is about 9379.1255989031. The cubic root of 87967997 is about 444.7420918528.

The spelling of 87967997 in words is "eighty-seven million, nine hundred sixty-seven thousand, nine hundred ninety-seven".