66079240 has 16 divisors (see below), whose sum is σ = 148678380. Its totient is φ = 26431680.

The previous prime is 66079231. The next prime is 66079291. The reversal of 66079240 is 4297066.

It can be written as a sum of positive squares in 2 ways, for example, as 64224196 + 1855044 = 8014^2 + 1362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66079196 and 66079205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825951 + ... + 826030.

Almost surely, 2^66079240 is an apocalyptic number.

It is an amenable number.

66079240 is an abundant number, since it is smaller than the sum of its proper divisors (82599140).

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

66079240 is a wasteful number, since it uses less digits than its factorization.

66079240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651992 (or 1651988 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 66079240 is about 8128.9138265822. The cubic root of 66079240 is about 404.2856686222.

The spelling of 66079240 in words is "sixty-six million, seventy-nine thousand, two hundred forty".