65073720 has 32 divisors (see below), whose sum is σ = 195221520. Its totient is φ = 17352960.

The previous prime is 65073719. The next prime is 65073731. The reversal of 65073720 is 2737056.

65073720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271021 + ... + 271260.

Almost surely, 2^65073720 is an apocalyptic number.

65073720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65073720 is an abundant number, since it is smaller than the sum of its proper divisors (130147800).

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

65073720 is a wasteful number, since it uses less digits than its factorization.

65073720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542295 (or 542291 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 65073720 is about 8066.8283730348. The cubic root of 65073720 is about 402.2245224825.

The spelling of 65073720 in words is "sixty-five million, seventy-three thousand, seven hundred twenty".