61868834 has 4 divisors (see below), whose sum is σ = 92803254. Its totient is φ = 30934416.

The previous prime is 61868813. The next prime is 61868837. The reversal of 61868834 is 43886816.

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 + 10609 = 7865^2 + 103^2 .

It is not an unprimeable number, because it can be changed into a prime (61868837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15467207 + ... + 15467210.

Almost surely, 2^61868834 is an apocalyptic number.

61868834 is a deficient number, since it is larger than the sum of its proper divisors (30934420).

61868834 is a wasteful number, since it uses less digits than its factorization.

61868834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30934419.

The product of its digits is 221184, while the sum is 44.

The square root of 61868834 is about 7865.6744148229. The cubic root of 61868834 is about 395.5098559484.

The spelling of 61868834 in words is "sixty-one million, eight hundred sixty-eight thousand, eight hundred thirty-four".