68770031 has 4 divisors (see below), whose sum is σ = 75021864. Its totient is φ = 62518200.

The previous prime is 68770019. The next prime is 68770043. The reversal of 68770031 is 13007786.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (68770019) and next prime (68770043).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68770031 is a prime.

It is a super-2 number, since 2×68770031² = 9458634327481922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68770031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68770001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3125900 + ... + 3125921.

It is an arithmetic number, because the mean of its divisors is an integer number (18755466).

Almost surely, 2^68770031 is an apocalyptic number.

68770031 is a deficient number, since it is larger than the sum of its proper divisors (6251833).

68770031 is a wasteful number, since it uses less digits than its factorization.

68770031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251832.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 68770031 is about 8292.7698026655. The cubic root of 68770031 is about 409.7004176778.

The spelling of 68770031 in words is "sixty-eight million, seven hundred seventy thousand, thirty-one".