61644316 has 12 divisors (see below), whose sum is σ = 107995888. Its totient is φ = 30788352.

The previous prime is 61644313. The next prime is 61644371. The reversal of 61644316 is 61344616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61644311) 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, 4101 + ... + 11836.

Almost surely, 2^61644316 is an apocalyptic number.

It is an amenable number.

61644316 is a deficient number, since it is larger than the sum of its proper divisors (46351572).

61644316 is a wasteful number, since it uses less digits than its factorization.

61644316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16908 (or 16906 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 61644316 is about 7851.3894311771. The cubic root of 61644316 is about 395.0308494840.

The spelling of 61644316 in words is "sixty-one million, six hundred forty-four thousand, three hundred sixteen".