65642156 has 6 divisors (see below), whose sum is σ = 114873780. Its totient is φ = 32821076.

The previous prime is 65642153. The next prime is 65642177. The reversal of 65642156 is 65124656.

It is not an unprimeable number, because it can be changed into a prime (65642153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8205266 + ... + 8205273.

It is an arithmetic number, because the mean of its divisors is an integer number (19145630).

Almost surely, 2^65642156 is an apocalyptic number.

It is an amenable number.

65642156 is a deficient number, since it is larger than the sum of its proper divisors (49231624).

65642156 is a wasteful number, since it uses less digits than its factorization.

65642156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16410543 (or 16410541 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 65642156 is about 8101.9846951225. The cubic root of 65642156 is about 403.3923076269.

The spelling of 65642156 in words is "sixty-five million, six hundred forty-two thousand, one hundred fifty-six".