65770548 has 12 divisors (see below), whose sum is σ = 153464640. Its totient is φ = 21923512.

The previous prime is 65770543. The next prime is 65770553. The reversal of 65770548 is 84507756.

It is an interprime number because it is at equal distance from previous prime (65770543) and next prime (65770553).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65770543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740428 + ... + 2740451.

It is an arithmetic number, because the mean of its divisors is an integer number (12788720).

Almost surely, 2^65770548 is an apocalyptic number.

It is an amenable number.

65770548 is an abundant number, since it is smaller than the sum of its proper divisors (87694092).

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

65770548 is a wasteful number, since it uses less digits than its factorization.

65770548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480886 (or 5480884 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 65770548 is about 8109.9043150952. The cubic root of 65770548 is about 403.6551398139.

The spelling of 65770548 in words is "sixty-five million, seven hundred seventy thousand, five hundred forty-eight".