68693637 has 4 divisors (see below), whose sum is σ = 91591520. Its totient is φ = 45795756.

The previous prime is 68693609. The next prime is 68693659. The reversal of 68693637 is 73639686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68693637 - 2⁷ = 68693509 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 (68693237) 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, 11448937 + ... + 11448942.

It is an arithmetic number, because the mean of its divisors is an integer number (22897880).

Almost surely, 2^68693637 is an apocalyptic number.

It is an amenable number.

68693637 is a deficient number, since it is larger than the sum of its proper divisors (22897883).

68693637 is a wasteful number, since it uses less digits than its factorization.

68693637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22897882.

The product of its digits is 979776, while the sum is 48.

The square root of 68693637 is about 8288.1624622108. The cubic root of 68693637 is about 409.5486546210.

The spelling of 68693637 in words is "sixty-eight million, six hundred ninety-three thousand, six hundred thirty-seven".