61838889 has 8 divisors (see below), whose sum is σ = 94230720. Its totient is φ = 35336496.

The previous prime is 61838869. The next prime is 61838921. The reversal of 61838889 is 98883816.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61838889 - 2¹⁶ = 61773353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61838839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1472334 + ... + 1472375.

It is an arithmetic number, because the mean of its divisors is an integer number (11778840).

Almost surely, 2^61838889 is an apocalyptic number.

It is an amenable number.

61838889 is a deficient number, since it is larger than the sum of its proper divisors (32391831).

61838889 is a wasteful number, since it uses less digits than its factorization.

61838889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944719.

The product of its digits is 663552, while the sum is 51.

The square root of 61838889 is about 7863.7706604402. The cubic root of 61838889 is about 395.4460356953.

The spelling of 61838889 in words is "sixty-one million, eight hundred thirty-eight thousand, eight hundred eighty-nine".