65773900 has 36 divisors (see below), whose sum is σ = 144874408. Its totient is φ = 25914240.

The previous prime is 65773891. The next prime is 65773907. The reversal of 65773900 is 937756.

It is a self number, because there is not a number n which added to its sum of digits gives 65773900.

It is not an unprimeable number, because it can be changed into a prime (65773907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1792 + ... + 11608.

Almost surely, 2^65773900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65773900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72437204).

65773900 is an abundant number, since it is smaller than the sum of its proper divisors (79100508).

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

65773900 is a wasteful number, since it uses less digits than its factorization.

65773900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9898 (or 9891 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 65773900 is about 8110.1109733468. The cubic root of 65773900 is about 403.6619971337.

The spelling of 65773900 in words is "sixty-five million, seven hundred seventy-three thousand, nine hundred".