87499967 has 2 divisors, whose sum is σ = 87499968. Its totient is φ = 87499966.

The previous prime is 87499963. The next prime is 87500029. The reversal of 87499967 is 76999478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87499967 - 2² = 87499963 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87499961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43749983 + 43749984.

It is an arithmetic number, because the mean of its divisors is an integer number (43749984).

Almost surely, 2^87499967 is an apocalyptic number.

87499967 is a deficient number, since it is larger than the sum of its proper divisors (1).

87499967 is an equidigital number, since it uses as much as digits as its factorization.

87499967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 59.

The square root of 87499967 is about 9354.1417030105. The cubic root of 87499967 is about 443.9519450602.

The spelling of 87499967 in words is "eighty-seven million, four hundred ninety-nine thousand, nine hundred sixty-seven".