68647090 has 16 divisors (see below), whose sum is σ = 125660160. Its totient is φ = 26993200.

The previous prime is 68647087. The next prime is 68647091. The reversal of 68647090 is 9074686.

It is not an unprimeable number, because it can be changed into a prime (68647091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57586 + ... + 58765.

It is an arithmetic number, because the mean of its divisors is an integer number (7853760).

Almost surely, 2^68647090 is an apocalyptic number.

68647090 is a deficient number, since it is larger than the sum of its proper divisors (57013070).

68647090 is a wasteful number, since it uses less digits than its factorization.

68647090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116417.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 68647090 is about 8285.3539453665. The cubic root of 68647090 is about 409.4561299494.

The spelling of 68647090 in words is "sixty-eight million, six hundred forty-seven thousand, ninety".