61889106 has 16 divisors (see below), whose sum is σ = 125626464. Its totient is φ = 20321664.

The previous prime is 61889101. The next prime is 61889119. The reversal of 61889106 is 60198816.

It is a super-2 number, since 2×61889106² = 7660522882958472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61889101) 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, 76575 + ... + 77378.

It is an arithmetic number, because the mean of its divisors is an integer number (7851654).

Almost surely, 2^61889106 is an apocalyptic number.

61889106 is an abundant number, since it is smaller than the sum of its proper divisors (63737358).

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

61889106 is a wasteful number, since it uses less digits than its factorization.

61889106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154025.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 61889106 is about 7866.9629463981. The cubic root of 61889106 is about 395.5530489409.

The spelling of 61889106 in words is "sixty-one million, eight hundred eighty-nine thousand, one hundred six".