68999732 has 6 divisors (see below), whose sum is σ = 120749538. Its totient is φ = 34499864.

The previous prime is 68999683. The next prime is 68999737. The reversal of 68999732 is 23799986.

It can be written as a sum of positive squares in only one way, i.e., 55413136 + 13586596 = 7444^2 + 3686^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68999737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8624963 + ... + 8624970.

It is an arithmetic number, because the mean of its divisors is an integer number (20124923).

Almost surely, 2^68999732 is an apocalyptic number.

It is an amenable number.

68999732 is a deficient number, since it is larger than the sum of its proper divisors (51749806).

68999732 is a wasteful number, since it uses less digits than its factorization.

68999732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17249937 (or 17249935 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 53.

The square root of 68999732 is about 8306.6077311981. The cubic root of 68999732 is about 410.1560619456.

The spelling of 68999732 in words is "sixty-eight million, nine hundred ninety-nine thousand, seven hundred thirty-two".