61826620 has 96 divisors (see below), whose sum is σ = 145006848. Its totient is φ = 22044672.

The previous prime is 61826591. The next prime is 61826651. The reversal of 61826620 is 2662816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 846904 + ... + 846976.

It is an arithmetic number, because the mean of its divisors is an integer number (1510488).

Almost surely, 2^61826620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61826620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72503424).

61826620 is an abundant number, since it is smaller than the sum of its proper divisors (83180228).

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

61826620 is a wasteful number, since it uses less digits than its factorization.

61826620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 61826620 is about 7862.9905252391. The cubic root of 61826620 is about 395.4198814505.

The spelling of 61826620 in words is "sixty-one million, eight hundred twenty-six thousand, six hundred twenty".