68406902 has 8 divisors (see below), whose sum is σ = 104793696. Its totient is φ = 33475672.

The previous prime is 68406883. The next prime is 68406907. The reversal of 68406902 is 20960486.

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 (68406907) 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, 363773 + ... + 363960.

It is an arithmetic number, because the mean of its divisors is an integer number (13099212).

Almost surely, 2^68406902 is an apocalyptic number.

68406902 is a deficient number, since it is larger than the sum of its proper divisors (36386794).

68406902 is a wasteful number, since it uses less digits than its factorization.

68406902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727782.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68406902 is about 8270.8465104849. The cubic root of 68406902 is about 408.9780258119.

The spelling of 68406902 in words is "sixty-eight million, four hundred six thousand, nine hundred two".