61089684 has 12 divisors (see below), whose sum is σ = 142542624. Its totient is φ = 20363224.

The previous prime is 61089683. The next prime is 61089703. The reversal of 61089684 is 48698016.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61089683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2545392 + ... + 2545415.

It is an arithmetic number, because the mean of its divisors is an integer number (11878552).

Almost surely, 2^61089684 is an apocalyptic number.

It is an amenable number.

61089684 is an abundant number, since it is smaller than the sum of its proper divisors (81452940).

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

61089684 is a wasteful number, since it uses less digits than its factorization.

61089684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090814 (or 5090812 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 61089684 is about 7815.9889969216. The cubic root of 61089684 is about 393.8425423198.

The spelling of 61089684 in words is "sixty-one million, eighty-nine thousand, six hundred eighty-four".