68511902 has 8 divisors (see below), whose sum is σ = 105274512. Its totient is φ = 33420400.

The previous prime is 68511899. The next prime is 68511907. The reversal of 68511902 is 20911586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68511907) 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, 417674 + ... + 417837.

It is an arithmetic number, because the mean of its divisors is an integer number (13159314).

Almost surely, 2^68511902 is an apocalyptic number.

68511902 is a deficient number, since it is larger than the sum of its proper divisors (36762610).

68511902 is a wasteful number, since it uses less digits than its factorization.

68511902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835554.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 68511902 is about 8277.1916735086. The cubic root of 68511902 is about 409.1871701077.

The spelling of 68511902 in words is "sixty-eight million, five hundred eleven thousand, nine hundred two".