61420536 has 48 divisors (see below), whose sum is σ = 167342760. Its totient is φ = 20351040.

The previous prime is 61420477. The next prime is 61420543. The reversal of 61420536 is 63502416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9991 + ... + 14921.

Almost surely, 2^61420536 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 61420536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83671380).

61420536 is an abundant number, since it is smaller than the sum of its proper divisors (105922224).

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

61420536 is a wasteful number, since it uses less digits than its factorization.

61420536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5116 (or 5109 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 61420536 is about 7837.1254934446. The cubic root of 61420536 is about 394.5522587838.

The spelling of 61420536 in words is "sixty-one million, four hundred twenty thousand, five hundred thirty-six".