61023666 has 16 divisors (see below), whose sum is σ = 133142688. Its totient is φ = 18492000.

The previous prime is 61023661. The next prime is 61023671. The reversal of 61023666 is 66632016.

61023666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61023661) and next prime (61023671).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61023661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462235 + ... + 462366.

It is an arithmetic number, because the mean of its divisors is an integer number (8321418).

Almost surely, 2^61023666 is an apocalyptic number.

61023666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61023666 is an abundant number, since it is smaller than the sum of its proper divisors (72119022).

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

61023666 is a wasteful number, since it uses less digits than its factorization.

61023666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924617.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 61023666 is about 7811.7645893870. The cubic root of 61023666 is about 393.7006194562.

The spelling of 61023666 in words is "sixty-one million, twenty-three thousand, six hundred sixty-six".