68466645 has 24 divisors (see below), whose sum is σ = 127805496. Its totient is φ = 33706368.

The previous prime is 68466641. The next prime is 68466659. The reversal of 68466645 is 54666486.

It can be written as a sum of positive squares in 4 ways, for example, as 9622404 + 58844241 = 3102^2 + 7671^2 .

It is not a de Polignac number, because 68466645 - 2² = 68466641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68466645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68466641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57934 + ... + 59103.

It is an arithmetic number, because the mean of its divisors is an integer number (5325229).

Almost surely, 2^68466645 is an apocalyptic number.

68466645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68466645 is a deficient number, since it is larger than the sum of its proper divisors (59338851).

68466645 is a wasteful number, since it uses less digits than its factorization.

68466645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117061 (or 117058 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 68466645 is about 8274.4573840222. The cubic root of 68466645 is about 409.0970511536.

The spelling of 68466645 in words is "sixty-eight million, four hundred sixty-six thousand, six hundred forty-five".