68393069 has 4 divisors (see below), whose sum is σ = 68424444. Its totient is φ = 68361696.

The previous prime is 68393063. The next prime is 68393071. The reversal of 68393069 is 96039386.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12517444 + 55875625 = 3538^2 + 7475^2 .

It is a cyclic number.

It is not a de Polignac number, because 68393069 - 2¹⁶ = 68327533 is a prime.

It is a super-2 number, since 2×68393069² = 9355223774477522, 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 (68393063) 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, 12152 + ... + 16865.

It is an arithmetic number, because the mean of its divisors is an integer number (17106111).

Almost surely, 2^68393069 is an apocalyptic number.

It is an amenable number.

68393069 is a deficient number, since it is larger than the sum of its proper divisors (31375).

68393069 is a wasteful number, since it uses less digits than its factorization.

68393069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31374.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 68393069 is about 8270.0102176479. The cubic root of 68393069 is about 408.9504565938.

The spelling of 68393069 in words is "sixty-eight million, three hundred ninety-three thousand, sixty-nine".