68399007 has 16 divisors (see below), whose sum is σ = 97077600. Its totient is φ = 42688512.

The previous prime is 68399003. The next prime is 68399011. The reversal of 68399007 is 70099386.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68399003) and next prime (68399011).

It is not a de Polignac number, because 68399007 - 2² = 68399003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68399007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68399003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6369 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (6067350).

Almost surely, 2^68399007 is an apocalyptic number.

68399007 is a deficient number, since it is larger than the sum of its proper divisors (28678593).

68399007 is a wasteful number, since it uses less digits than its factorization.

68399007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 68399007 is about 8270.3692178766. The cubic root of 68399007 is about 408.9622915042.

The spelling of 68399007 in words is "sixty-eight million, three hundred ninety-nine thousand, seven".