68737061 has 4 divisors (see below), whose sum is σ = 68759232. Its totient is φ = 68714892.

The previous prime is 68737049. The next prime is 68737073. The reversal of 68737061 is 16073786.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16073786 = 2 ⋅8036893.

It is an interprime number because it is at equal distance from previous prime (68737049) and next prime (68737073).

It is a cyclic number.

It is not a de Polignac number, because 68737061 - 2²² = 64542757 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 (68730061) 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, 5495 + ... + 12948.

It is an arithmetic number, because the mean of its divisors is an integer number (17189808).

Almost surely, 2^68737061 is an apocalyptic number.

It is an amenable number.

68737061 is a deficient number, since it is larger than the sum of its proper divisors (22171).

68737061 is a wasteful number, since it uses less digits than its factorization.

68737061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22170.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 68737061 is about 8290.7816881160. The cubic root of 68737061 is about 409.6349338141.

The spelling of 68737061 in words is "sixty-eight million, seven hundred thirty-seven thousand, sixty-one".