61862320 has 80 divisors (see below), whose sum is σ = 164052000. Its totient is φ = 21491712.

The previous prime is 61862299. The next prime is 61862321. The reversal of 61862320 is 2326816.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61862321) 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, 15931 + ... + 19429.

It is an arithmetic number, because the mean of its divisors is an integer number (2050650).

Almost surely, 2^61862320 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 61862320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82026000).

61862320 is an abundant number, since it is smaller than the sum of its proper divisors (102189680).

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

61862320 is a wasteful number, since it uses less digits than its factorization.

61862320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542 (or 3536 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 61862320 is about 7865.2603262702. The cubic root of 61862320 is about 395.4959747449.

The spelling of 61862320 in words is "sixty-one million, eight hundred sixty-two thousand, three hundred twenty".