68515797 has 64 divisors (see below), whose sum is σ = 117669888. Its totient is φ = 34560000.

The previous prime is 68515793. The next prime is 68515841. The reversal of 68515797 is 79751586.

It is not a de Polignac number, because 68515797 - 2² = 68515793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68515793) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 453672 + ... + 453822.

It is an arithmetic number, because the mean of its divisors is an integer number (1838592).

Almost surely, 2^68515797 is an apocalyptic number.

It is an amenable number.

68515797 is a deficient number, since it is larger than the sum of its proper divisors (49154091).

68515797 is a wasteful number, since it uses less digits than its factorization.

68515797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its digits is 529200, while the sum is 48.

The square root of 68515797 is about 8277.4269552802. The cubic root of 68515797 is about 409.1949242535.

It can be divided in two parts, 6851579 and 7, that added together give a palindrome (6851586).

The spelling of 68515797 in words is "sixty-eight million, five hundred fifteen thousand, seven hundred ninety-seven".