65661148 has 12 divisors (see below), whose sum is σ = 131322352. Its totient is φ = 28140480.

The previous prime is 65661107. The next prime is 65661151. The reversal of 65661148 is 84116656.

65661148 is an admirable number.

It is a super-2 number, since 2×65661148² = 8622772713355808, 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 in 3 ways as a sum of consecutive naturals, for example, 1172493 + ... + 1172548.

Almost surely, 2^65661148 is an apocalyptic number.

It is an amenable number.

65661148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65661148 is a wasteful number, since it uses less digits than its factorization.

65661148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345052 (or 2345050 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 65661148 is about 8103.1566688544. The cubic root of 65661148 is about 403.4312078725.

The spelling of 65661148 in words is "sixty-five million, six hundred sixty-one thousand, one hundred forty-eight".