66515048 has 32 divisors (see below), whose sum is σ = 134839200. Its totient is φ = 30652992.

The previous prime is 66515041. The next prime is 66515051. The reversal of 66515048 is 84051566.

It is a happy number.

It is a super-2 number, since 2×66515048² = 8848503220884608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66514999 and 66515017.

It is not an unprimeable number, because it can be changed into a prime (66515041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290 + ... + 11537.

It is an arithmetic number, because the mean of its divisors is an integer number (4213725).

Almost surely, 2^66515048 is an apocalyptic number.

It is an amenable number.

66515048 is an abundant number, since it is smaller than the sum of its proper divisors (68324152).

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

66515048 is a wasteful number, since it uses less digits than its factorization.

66515048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11889 (or 11885 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 66515048 is about 8155.6758150383. The cubic root of 66515048 is about 405.1725079260.

The spelling of 66515048 in words is "sixty-six million, five hundred fifteen thousand, forty-eight".