65191936 has 60 divisors (see below), whose sum is σ = 136834992. Its totient is φ = 30998528.

The previous prime is 65191921. The next prime is 65191943. The reversal of 65191936 is 63919156.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376746 + ... + 376918.

Almost surely, 2^65191936 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 65191936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68417496).

65191936 is an abundant number, since it is smaller than the sum of its proper divisors (71643056).

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

65191936 is an equidigital number, since it uses as much as digits as its factorization.

65191936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 198 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The square root of 65191936 is about 8074.1523394100. The cubic root of 65191936 is about 402.4679418419.

The spelling of 65191936 in words is "sixty-five million, one hundred ninety-one thousand, nine hundred thirty-six".