87671651 has 2 divisors, whose sum is σ = 87671652. Its totient is φ = 87671650.

The previous prime is 87671629. The next prime is 87671659. The reversal of 87671651 is 15617678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87671651 - 2⁶ = 87671587 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 87671599 and 87671608.

It is not a weakly prime, because it can be changed into another prime (87671659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43835825 + 43835826.

It is an arithmetic number, because the mean of its divisors is an integer number (43835826).

Almost surely, 2^87671651 is an apocalyptic number.

87671651 is a deficient number, since it is larger than the sum of its proper divisors (1).

87671651 is an equidigital number, since it uses as much as digits as its factorization.

87671651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 41.

The square root of 87671651 is about 9363.3141034572. The cubic root of 87671651 is about 444.2421152643.

It can be divided in two parts, 876 and 71651, that added together give a palindrome (72527).

The spelling of 87671651 in words is "eighty-seven million, six hundred seventy-one thousand, six hundred fifty-one".