61716828 has 48 divisors (see below), whose sum is σ = 149184000. Its totient is φ = 19845504.

The previous prime is 61716827. The next prime is 61716829. The reversal of 61716828 is 82861716.

It is an interprime number because it is at equal distance from previous prime (61716827) and next prime (61716829).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61716827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40423 + ... + 41921.

It is an arithmetic number, because the mean of its divisors is an integer number (3108000).

Almost surely, 2^61716828 is an apocalyptic number.

It is an amenable number.

61716828 is an abundant number, since it is smaller than the sum of its proper divisors (87467172).

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

61716828 is a wasteful number, since it uses less digits than its factorization.

61716828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1624 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 61716828 is about 7856.0058553950. The cubic root of 61716828 is about 395.1856799408.

The spelling of 61716828 in words is "sixty-one million, seven hundred sixteen thousand, eight hundred twenty-eight".