65081766 has 16 divisors (see below), whose sum is σ = 135823104. Its totient is φ = 20750664.

The previous prime is 65081761. The next prime is 65081773. The reversal of 65081766 is 66718056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65081761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235666 + ... + 235941.

It is an arithmetic number, because the mean of its divisors is an integer number (8488944).

Almost surely, 2^65081766 is an apocalyptic number.

65081766 is an abundant number, since it is smaller than the sum of its proper divisors (70741338).

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

65081766 is a wasteful number, since it uses less digits than its factorization.

65081766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471635.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 65081766 is about 8067.3270666312. The cubic root of 65081766 is about 402.2410994004.

The spelling of 65081766 in words is "sixty-five million, eighty-one thousand, seven hundred sixty-six".