68561146 has 4 divisors (see below), whose sum is σ = 102841722. Its totient is φ = 34280572.

The previous prime is 68561131. The next prime is 68561147. The reversal of 68561146 is 64116586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61858225 + 6702921 = 7865^2 + 2589^2 .

It is not an unprimeable number, because it can be changed into a prime (68561147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17140285 + ... + 17140288.

Almost surely, 2^68561146 is an apocalyptic number.

68561146 is a deficient number, since it is larger than the sum of its proper divisors (34280576).

68561146 is a wasteful number, since it uses less digits than its factorization.

68561146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34280575.

The product of its digits is 34560, while the sum is 37.

The square root of 68561146 is about 8280.1658195956. The cubic root of 68561146 is about 409.2851831859.

The spelling of 68561146 in words is "sixty-eight million, five hundred sixty-one thousand, one hundred forty-six".