68601563 has 4 divisors (see below), whose sum is σ = 68875128. Its totient is φ = 68328000.

The previous prime is 68601541. The next prime is 68601581. The reversal of 68601563 is 36510686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36510686 = 2 ⋅18255343.

It is a cyclic number.

It is not a de Polignac number, because 68601563 - 2⁶ = 68601499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68601503) 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, 136406 + ... + 136907.

It is an arithmetic number, because the mean of its divisors is an integer number (17218782).

Almost surely, 2^68601563 is an apocalyptic number.

68601563 is a deficient number, since it is larger than the sum of its proper divisors (273565).

68601563 is a wasteful number, since it uses less digits than its factorization.

68601563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273564.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 68601563 is about 8282.6060512377. The cubic root of 68601563 is about 409.3655923328.

The spelling of 68601563 in words is "sixty-eight million, six hundred one thousand, five hundred sixty-three".