61151636 has 36 divisors (see below), whose sum is σ = 132445152. Its totient is φ = 24189984.

The previous prime is 61151621. The next prime is 61151647. The reversal of 61151636 is 63615116.

It is a junction number, because it is equal to n+sod(n) for n = 61151599 and 61151608.

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, 1730 + ... + 11193.

It is an arithmetic number, because the mean of its divisors is an integer number (3679032).

Almost surely, 2^61151636 is an apocalyptic number.

It is an amenable number.

61151636 is an abundant number, since it is smaller than the sum of its proper divisors (71293516).

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

61151636 is a wasteful number, since it uses less digits than its factorization.

61151636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960 (or 12945 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 61151636 is about 7819.9511507426. The cubic root of 61151636 is about 393.9756312928.

It can be divided in two parts, 611 and 51636, that multiplied together give a triangular number (31549596 = T₇₉₄₃).

The spelling of 61151636 in words is "sixty-one million, one hundred fifty-one thousand, six hundred thirty-six".