65954940 has 24 divisors (see below), whose sum is σ = 184674000. Its totient is φ = 17587968.

The previous prime is 65954939. The next prime is 65954971. The reversal of 65954940 is 4945956.

It is a happy number.

It is a super-2 number, since 2×65954940² = 8700108220807200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65954892 and 65954901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549565 + ... + 549684.

It is an arithmetic number, because the mean of its divisors is an integer number (7694750).

Almost surely, 2^65954940 is an apocalyptic number.

65954940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65954940 is an abundant number, since it is smaller than the sum of its proper divisors (118719060).

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

65954940 is a wasteful number, since it uses less digits than its factorization.

65954940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099261 (or 1099259 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 65954940 is about 8121.2646798390. The cubic root of 65954940 is about 404.0320122985.

The spelling of 65954940 in words is "sixty-five million, nine hundred fifty-four thousand, nine hundred forty".