68646288 has 20 divisors (see below), whose sum is σ = 177336368. Its totient is φ = 22882080.

The previous prime is 68646287. The next prime is 68646293. The reversal of 68646288 is 88264686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1430131 = 68646288 / (6 + 8 + 6 + 4 + 6 + 2 + 8 + 8).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (68646287) 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, 715018 + ... + 715113.

Almost surely, 2^68646288 is an apocalyptic number.

It is an amenable number.

68646288 is an abundant number, since it is smaller than the sum of its proper divisors (108690080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68646288 is a wasteful number, since it uses less digits than its factorization.

68646288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430142 (or 1430136 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 68646288 is about 8285.3055465686. The cubic root of 68646288 is about 409.4545353924.

The spelling of 68646288 in words is "sixty-eight million, six hundred forty-six thousand, two hundred eighty-eight".