102066261 has 16 divisors (see below), whose sum is σ = 152083008. Its totient is φ = 60348800.

The previous prime is 102066247. The next prime is 102066269. The reversal of 102066261 is 162660201.

It is a cyclic number.

It is not a de Polignac number, because 102066261 - 2⁶ = 102066197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102066269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36366 + ... + 39071.

It is an arithmetic number, because the mean of its divisors is an integer number (9505188).

Almost surely, 2^102066261 is an apocalyptic number.

102066261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102066261 is a deficient number, since it is larger than the sum of its proper divisors (50016747).

102066261 is a wasteful number, since it uses less digits than its factorization.

102066261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75492.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 102066261 is about 10102.7848140995. The cubic root of 102066261 is about 467.3340251751.

The spelling of 102066261 in words is "one hundred two million, sixty-six thousand, two hundred sixty-one".