6664250061 has 48 divisors (see below), whose sum is σ = 11204921728. Its totient is φ = 3737923200.

The previous prime is 6664250011. The next prime is 6664250093. The reversal of 6664250061 is 1600524666.

It is a happy number.

It is not a de Polignac number, because 6664250061 - 2⁶ = 6664249997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6664249998 and 6664250025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664250011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2192835 + ... + 2195871.

Almost surely, 2^6664250061 is an apocalyptic number.

6664250061 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6664250061 is a deficient number, since it is larger than the sum of its proper divisors (4540671667).

6664250061 is a wasteful number, since it uses less digits than its factorization.

6664250061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682 (or 3679 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6664250061 is about 81634.8581244556. The cubic root of 6664250061 is about 1881.8446189784.

The spelling of 6664250061 in words is "six billion, six hundred sixty-four million, two hundred fifty thousand, sixty-one".