68071499 has 4 divisors (see below), whose sum is σ = 68246880. Its totient is φ = 67896120.

The previous prime is 68071489. The next prime is 68071583. The reversal of 68071499 is 99417086.

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 68071499 - 2⁴ = 68071483 is a prime.

It is a super-2 number, since 2×68071499² = 9267457952214002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68071459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87107 + ... + 87884.

It is an arithmetic number, because the mean of its divisors is an integer number (17061720).

Almost surely, 2^68071499 is an apocalyptic number.

68071499 is a deficient number, since it is larger than the sum of its proper divisors (175381).

68071499 is a wasteful number, since it uses less digits than its factorization.

68071499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175380.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 68071499 is about 8250.5453759130. The cubic root of 68071499 is about 408.3085160909.

The spelling of 68071499 in words is "sixty-eight million, seventy-one thousand, four hundred ninety-nine".