64066061 has 4 divisors (see below), whose sum is σ = 64168224. Its totient is φ = 63963900.

The previous prime is 64066049. The next prime is 64066097. The reversal of 64066061 is 16066046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16066046 = 2 ⋅8033023.

It is a cyclic number.

It is not a de Polignac number, because 64066061 - 2⁶ = 64065997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64066021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50135 + ... + 51396.

It is an arithmetic number, because the mean of its divisors is an integer number (16042056).

Almost surely, 2^64066061 is an apocalyptic number.

It is an amenable number.

64066061 is a deficient number, since it is larger than the sum of its proper divisors (102163).

64066061 is a wasteful number, since it uses less digits than its factorization.

64066061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102162.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 64066061 is about 8004.1277476062. The cubic root of 64066061 is about 400.1375797574.

The spelling of 64066061 in words is "sixty-four million, sixty-six thousand, sixty-one".