65963740 has 48 divisors (see below), whose sum is σ = 147891744. Its totient is φ = 24627200.

The previous prime is 65963713. The next prime is 65963741. The reversal of 65963740 is 4736956.

It is a junction number, because it is equal to n+sod(n) for n = 65963693 and 65963702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65963741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43800 + ... + 45280.

It is an arithmetic number, because the mean of its divisors is an integer number (3081078).

Almost surely, 2^65963740 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 65963740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73945872).

65963740 is an abundant number, since it is smaller than the sum of its proper divisors (81928004).

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

65963740 is a wasteful number, since it uses less digits than its factorization.

65963740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 65963740 is about 8121.8064493067. The cubic root of 65963740 is about 404.0499807458.

The spelling of 65963740 in words is "sixty-five million, nine hundred sixty-three thousand, seven hundred forty".