61396020 has 108 divisors (see below), whose sum is σ = 216671364. Its totient is φ = 14031360.

The previous prime is 61395989. The next prime is 61396031. The reversal of 61396020 is 2069316.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35569296 + 25826724 = 5964^2 + 5082^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5340 + ... + 12300.

Almost surely, 2^61396020 is an apocalyptic number.

61396020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61396020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108335682).

61396020 is an abundant number, since it is smaller than the sum of its proper divisors (155275344).

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

61396020 is a wasteful number, since it uses less digits than its factorization.

61396020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6990 (or 6978 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 61396020 is about 7835.5612434592. The cubic root of 61396020 is about 394.4997566346.

The spelling of 61396020 in words is "sixty-one million, three hundred ninety-six thousand, twenty".