61289089 has 8 divisors (see below), whose sum is σ = 64196352. Its totient is φ = 58402080.

The previous prime is 61289051. The next prime is 61289101. The reversal of 61289089 is 98098216.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61289089 - 2²⁵ = 27734657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61289009) 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, 1317 + ... + 11149.

It is an arithmetic number, because the mean of its divisors is an integer number (8024544).

Almost surely, 2^61289089 is an apocalyptic number.

It is an amenable number.

61289089 is a deficient number, since it is larger than the sum of its proper divisors (2907263).

61289089 is a wasteful number, since it uses less digits than its factorization.

61289089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 61289089 is about 7828.7348275440. The cubic root of 61289089 is about 394.2705953773.

The spelling of 61289089 in words is "sixty-one million, two hundred eighty-nine thousand, eighty-nine".