68939573 has 8 divisors (see below), whose sum is σ = 74775960. Its totient is φ = 63301120.

The previous prime is 68939569. The next prime is 68939593. The reversal of 68939573 is 37593986.

It can be written as a sum of positive squares in 4 ways, for example, as 14799409 + 54140164 = 3847^2 + 7358^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68939573 - 2² = 68939569 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68939593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48758 + ... + 50151.

It is an arithmetic number, because the mean of its divisors is an integer number (9346995).

Almost surely, 2^68939573 is an apocalyptic number.

It is an amenable number.

68939573 is a deficient number, since it is larger than the sum of its proper divisors (5836387).

68939573 is a wasteful number, since it uses less digits than its factorization.

68939573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98967.

The product of its digits is 1224720, while the sum is 50.

The square root of 68939573 is about 8302.9857882571. The cubic root of 68939573 is about 410.0368259605.

The spelling of 68939573 in words is "sixty-eight million, nine hundred thirty-nine thousand, five hundred seventy-three".