66520348 has 6 divisors (see below), whose sum is σ = 116410616. Its totient is φ = 33260172.

The previous prime is 66520331. The next prime is 66520351. The reversal of 66520348 is 84302566.

It is a happy number.

It is a super-2 number, since 2×66520348² = 8849913396082208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8315040 + ... + 8315047.

Almost surely, 2^66520348 is an apocalyptic number.

It is an amenable number.

66520348 is a deficient number, since it is larger than the sum of its proper divisors (49890268).

66520348 is a wasteful number, since it uses less digits than its factorization.

66520348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16630091 (or 16630089 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 66520348 is about 8156.0007356547. Note that the first 3 decimals coincide. The cubic root of 66520348 is about 405.1832691864.

The spelling of 66520348 in words is "sixty-six million, five hundred twenty thousand, three hundred forty-eight".