61351836 has 96 divisors (see below), whose sum is σ = 185525760. Its totient is φ = 15323904.

The previous prime is 61351813. The next prime is 61351859. The reversal of 61351836 is 63815316.

61351836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61351813) and next prime (61351859).

It is a junction number, because it is equal to n+sod(n) for n = 61351797 and 61351806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19270 + ... + 22226.

It is an arithmetic number, because the mean of its divisors is an integer number (1932560).

Almost surely, 2^61351836 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 61351836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92762880).

61351836 is an abundant number, since it is smaller than the sum of its proper divisors (124173924).

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

61351836 is a wasteful number, since it uses less digits than its factorization.

61351836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003 (or 3001 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 61351836 is about 7832.7412825907. The cubic root of 61351836 is about 394.4050992487.

The spelling of 61351836 in words is "sixty-one million, three hundred fifty-one thousand, eight hundred thirty-six".