68430987 has 12 divisors (see below), whose sum is σ = 102506040. Its totient is φ = 45620496.

The previous prime is 68430983. The next prime is 68430991. The reversal of 68430987 is 78903486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68430983) and next prime (68430991).

It is not a de Polignac number, because 68430987 - 2² = 68430983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68430983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140562 + ... + 141047.

It is an arithmetic number, because the mean of its divisors is an integer number (8542170).

Almost surely, 2^68430987 is an apocalyptic number.

68430987 is a deficient number, since it is larger than the sum of its proper divisors (34075053).

68430987 is an equidigital number, since it uses as much as digits as its factorization.

68430987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281624 (or 281612 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 68430987 is about 8272.3024001786. The cubic root of 68430987 is about 409.0260184348.

The spelling of 68430987 in words is "sixty-eight million, four hundred thirty thousand, nine hundred eighty-seven".