68490351 has 6 divisors (see below), whose sum is σ = 98930520. Its totient is φ = 45660228.

The previous prime is 68490329. The next prime is 68490371. The reversal of 68490351 is 15309486.

It is not a de Polignac number, because 68490351 - 2⁶ = 68490287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68490311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3805011 + ... + 3805028.

It is an arithmetic number, because the mean of its divisors is an integer number (16488420).

Almost surely, 2^68490351 is an apocalyptic number.

68490351 is a deficient number, since it is larger than the sum of its proper divisors (30440169).

68490351 is a wasteful number, since it uses less digits than its factorization.

68490351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7610045 (or 7610042 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 68490351 is about 8275.8897406865. The cubic root of 68490351 is about 409.1442611764.

The spelling of 68490351 in words is "sixty-eight million, four hundred ninety thousand, three hundred fifty-one".