66265416 has 48 divisors (see below), whose sum is σ = 205108800. Its totient is φ = 18932832.

The previous prime is 66265411. The next prime is 66265417. The reversal of 66265416 is 61456266.

It is a happy number.

It is a super-2 number, since 2×66265416² = 8782210715306112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (66265411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65236 + ... + 66243.

It is an arithmetic number, because the mean of its divisors is an integer number (4273100).

Almost surely, 2^66265416 is an apocalyptic number.

It is an amenable number.

66265416 is an abundant number, since it is smaller than the sum of its proper divisors (138843384).

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

66265416 is a wasteful number, since it uses less digits than its factorization.

66265416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131498 (or 131491 counting only the distinct ones).

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

The square root of 66265416 is about 8140.3572403181. The cubic root of 66265416 is about 404.6649996117.

The spelling of 66265416 in words is "sixty-six million, two hundred sixty-five thousand, four hundred sixteen".