68298431 has 4 divisors (see below), whose sum is σ = 71267952. Its totient is φ = 65328912.

The previous prime is 68298427. The next prime is 68298437. The reversal of 68298431 is 13489286.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68298431 - 2² = 68298427 is a prime.

It is a super-2 number, since 2×68298431² = 9329351354123522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68298437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1484726 + ... + 1484771.

It is an arithmetic number, because the mean of its divisors is an integer number (17816988).

Almost surely, 2^68298431 is an apocalyptic number.

68298431 is a deficient number, since it is larger than the sum of its proper divisors (2969521).

68298431 is a wasteful number, since it uses less digits than its factorization.

68298431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969520.

The product of its digits is 82944, while the sum is 41.

The square root of 68298431 is about 8264.2864785776. The cubic root of 68298431 is about 408.7617429378.

The spelling of 68298431 in words is "sixty-eight million, two hundred ninety-eight thousand, four hundred thirty-one".