68472787 has 4 divisors (see below), whose sum is σ = 72500616. Its totient is φ = 64444960.

The previous prime is 68472779. The next prime is 68472797. The reversal of 68472787 is 78727486.

It is a happy number.

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

It is not a de Polignac number, because 68472787 - 2³ = 68472779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68472787.

It is not an unprimeable number, because it can be changed into a prime (68472797) 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, 2013889 + ... + 2013922.

It is an arithmetic number, because the mean of its divisors is an integer number (18125154).

Almost surely, 2^68472787 is an apocalyptic number.

68472787 is a deficient number, since it is larger than the sum of its proper divisors (4027829).

68472787 is a wasteful number, since it uses less digits than its factorization.

68472787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027828.

The product of its digits is 1053696, while the sum is 49.

The square root of 68472787 is about 8274.8285178607. The cubic root of 68472787 is about 409.1092838690.

The spelling of 68472787 in words is "sixty-eight million, four hundred seventy-two thousand, seven hundred eighty-seven".