61234644 has 24 divisors (see below), whose sum is σ = 150401440. Its totient is φ = 19337184.

The previous prime is 61234639. The next prime is 61234673. The reversal of 61234644 is 44643216.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134059 + ... + 134514.

Almost surely, 2^61234644 is an apocalyptic number.

It is an amenable number.

61234644 is an abundant number, since it is smaller than the sum of its proper divisors (89166796).

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

61234644 is a wasteful number, since it uses less digits than its factorization.

61234644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268599 (or 268597 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 61234644 is about 7825.2568008980. The cubic root of 61234644 is about 394.1538131877.

The spelling of 61234644 in words is "sixty-one million, two hundred thirty-four thousand, six hundred forty-four".