68472751 has 4 divisors (see below), whose sum is σ = 72076600. Its totient is φ = 64868904.

The previous prime is 68472743. The next prime is 68472763. The reversal of 68472751 is 15727486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68472751 - 2³ = 68472743 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 (68472731) 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, 1801896 + ... + 1801933.

It is an arithmetic number, because the mean of its divisors is an integer number (18019150).

Almost surely, 2^68472751 is an apocalyptic number.

68472751 is a deficient number, since it is larger than the sum of its proper divisors (3603849).

68472751 is a wasteful number, since it uses less digits than its factorization.

68472751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603848.

The product of its digits is 94080, while the sum is 40.

The square root of 68472751 is about 8274.8263425887. The cubic root of 68472751 is about 409.1092121717.

The spelling of 68472751 in words is "sixty-eight million, four hundred seventy-two thousand, seven hundred fifty-one".