61602156 has 144 divisors (see below), whose sum is σ = 197503488. Its totient is φ = 15724800.

The previous prime is 61602143. The next prime is 61602157. The reversal of 61602156 is 65120616.

It is a happy number.

61602156 is a `hidden beast` number, since 6 + 1 + 602 + 1 + 56 = 666.

61602156 is nontrivially palindromic in base 5.

It is not an unprimeable number, because it can be changed into a prime (61602157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196656 + ... + 196968.

It is an arithmetic number, because the mean of its divisors is an integer number (1371552).

Almost surely, 2^61602156 is an apocalyptic number.

61602156 is a gapful number since it is divisible by the number (66) 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 61602156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98751744).

61602156 is an abundant number, since it is smaller than the sum of its proper divisors (135901332).

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

61602156 is a wasteful number, since it uses less digits than its factorization.

61602156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61602156 is about 7848.7040968557. The cubic root of 61602156 is about 394.9407719773.

The spelling of 61602156 in words is "sixty-one million, six hundred two thousand, one hundred fifty-six".