68537869 has 8 divisors (see below), whose sum is σ = 70986240. Its totient is φ = 66104400.

The previous prime is 68537857. The next prime is 68537927. The reversal of 68537869 is 96873586.

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

It is not a de Polignac number, because 68537869 - 2⁷ = 68537741 is a prime.

It is a super-2 number, since 2×68537869² = 9394878974122322, 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 (68537849) 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, 6087 + ... + 13195.

It is an arithmetic number, because the mean of its divisors is an integer number (8873280).

Almost surely, 2^68537869 is an apocalyptic number.

It is an amenable number.

68537869 is a deficient number, since it is larger than the sum of its proper divisors (2448371).

68537869 is a wasteful number, since it uses less digits than its factorization.

68537869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7451.

The product of its digits is 2177280, while the sum is 52.

The square root of 68537869 is about 8278.7601124806. The cubic root of 68537869 is about 409.2388595263.

The spelling of 68537869 in words is "sixty-eight million, five hundred thirty-seven thousand, eight hundred sixty-nine".