61993836 has 30 divisors (see below), whose sum is σ = 162064980. Its totient is φ = 20664504.

The previous prime is 61993829. The next prime is 61993843. The reversal of 61993836 is 63839916.

It is an interprime number because it is at equal distance from previous prime (61993829) and next prime (61993843).

It is a junction number, because it is equal to n+sod(n) for n = 61993791 and 61993800.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 95346 + ... + 95993.

It is an arithmetic number, because the mean of its divisors is an integer number (5402166).

Almost surely, 2^61993836 is an apocalyptic number.

It is an amenable number.

61993836 is an abundant number, since it is smaller than the sum of its proper divisors (100071144).

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

61993836 is a wasteful number, since it uses less digits than its factorization.

61993836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191355 (or 191344 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 61993836 is about 7873.6164498914. The cubic root of 61993836 is about 395.7760441657.

The spelling of 61993836 in words is "sixty-one million, nine hundred ninety-three thousand, eight hundred thirty-six".