61813336 has 16 divisors (see below), whose sum is σ = 124815600. Its totient is φ = 28529184.

The previous prime is 61813333. The next prime is 61813357. The reversal of 61813336 is 63331816.

It is a super-3 number, since 3×61813336³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61813298 and 61813307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61813333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297076 + ... + 297283.

It is an arithmetic number, because the mean of its divisors is an integer number (7800975).

Almost surely, 2^61813336 is an apocalyptic number.

It is an amenable number.

61813336 is an abundant number, since it is smaller than the sum of its proper divisors (63002264).

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

61813336 is a wasteful number, since it uses less digits than its factorization.

61813336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594378 (or 594374 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 61813336 is about 7862.1457630853. The cubic root of 61813336 is about 395.3915595942.

The spelling of 61813336 in words is "sixty-one million, eight hundred thirteen thousand, three hundred thirty-six".