65166061 has 8 divisors (see below), whose sum is σ = 70193664. Its totient is φ = 60321360.

The previous prime is 65166053. The next prime is 65166071. The reversal of 65166061 is 16066156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65166061 - 2³ = 65166053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65166071) 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, 44986 + ... + 46411.

It is an arithmetic number, because the mean of its divisors is an integer number (8774208).

Almost surely, 2^65166061 is an apocalyptic number.

It is an amenable number.

65166061 is a deficient number, since it is larger than the sum of its proper divisors (5027603).

65166061 is a wasteful number, since it uses less digits than its factorization.

65166061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91451.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 65166061 is about 8072.5498449994. The cubic root of 65166061 is about 402.4146876272.

The spelling of 65166061 in words is "sixty-five million, one hundred sixty-six thousand, sixty-one".