97987651 has 2 divisors, whose sum is σ = 97987652. Its totient is φ = 97987650.

The previous prime is 97987601. The next prime is 97987657. The reversal of 97987651 is 15678979.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15678979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97987651 - 2⁷ = 97987523 is a prime.

It is a super-3 number, since 3×97987651³ (a number of 25 digits) contains 333 as substring.

It is a zygodrome in base 7.

It is not a weakly prime, because it can be changed into another prime (97987657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48993825 + 48993826.

It is an arithmetic number, because the mean of its divisors is an integer number (48993826).

Almost surely, 2^97987651 is an apocalyptic number.

97987651 is a deficient number, since it is larger than the sum of its proper divisors (1).

97987651 is an equidigital number, since it uses as much as digits as its factorization.

97987651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 52.

The square root of 97987651 is about 9898.8711982731. The cubic root of 97987651 is about 461.0242629918.

The spelling of 97987651 in words is "ninety-seven million, nine hundred eighty-seven thousand, six hundred fifty-one".