61867146 has 32 divisors (see below), whose sum is σ = 136334016. Its totient is φ = 18560000.

The previous prime is 61867129. The next prime is 61867147. The reversal of 61867146 is 64176816.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61867147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2026 + ... + 11306.

It is an arithmetic number, because the mean of its divisors is an integer number (4260438).

Almost surely, 2^61867146 is an apocalyptic number.

61867146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 61867146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68167008).

61867146 is an abundant number, since it is smaller than the sum of its proper divisors (74466870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61867146 is a wasteful number, since it uses less digits than its factorization.

61867146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398.

The product of its digits is 48384, while the sum is 39.

The square root of 61867146 is about 7865.5671124211. The cubic root of 61867146 is about 395.5062589478.

The spelling of 61867146 in words is "sixty-one million, eight hundred sixty-seven thousand, one hundred forty-six".