50066665 has 16 divisors (see below), whose sum is σ = 66620736. Its totient is φ = 35812800.

The previous prime is 50066659. The next prime is 50066669. The reversal of 50066665 is 56666005.

It is not a de Polignac number, because 50066665 - 2³ = 50066657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50066665.

It is not an unprimeable number, because it can be changed into a prime (50066669) 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, 4107 + ... + 10816.

It is an arithmetic number, because the mean of its divisors is an integer number (4163796).

Almost surely, 2^50066665 is an apocalyptic number.

50066665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50066665 is a deficient number, since it is larger than the sum of its proper divisors (16554071).

50066665 is a wasteful number, since it uses less digits than its factorization.

50066665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15000.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 50066665 is about 7075.7801689990. The cubic root of 50066665 is about 368.5668077904.

The spelling of 50066665 in words is "fifty million, sixty-six thousand, six hundred sixty-five".