68610663 has 12 divisors (see below), whose sum is σ = 108113928. Its totient is φ = 41582160.

The previous prime is 68610649. The next prime is 68610677. The reversal of 68610663 is 36601686.

It is an interprime number because it is at equal distance from previous prime (68610649) and next prime (68610677).

It is not a de Polignac number, because 68610663 - 2⁹ = 68610151 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68610683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346420 + ... + 346617.

It is an arithmetic number, because the mean of its divisors is an integer number (9009494).

Almost surely, 2^68610663 is an apocalyptic number.

68610663 is a deficient number, since it is larger than the sum of its proper divisors (39503265).

68610663 is a wasteful number, since it uses less digits than its factorization.

68610663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693054 (or 693051 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 68610663 is about 8283.1553770287. The cubic root of 68610663 is about 409.3836923198.

The spelling of 68610663 in words is "sixty-eight million, six hundred ten thousand, six hundred sixty-three".