65734920 has 192 divisors, whose sum is σ = 236545920. Its totient is φ = 15747072.

The previous prime is 65734891. The next prime is 65734951. The reversal of 65734920 is 2943756.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140527 + ... + 140993.

It is an arithmetic number, because the mean of its divisors is an integer number (1232010).

Almost surely, 2^65734920 is an apocalyptic number.

65734920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65734920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118272960).

65734920 is an abundant number, since it is smaller than the sum of its proper divisors (170811000).

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

65734920 is a wasteful number, since it uses less digits than its factorization.

65734920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 65734920 is about 8107.7074441546. The cubic root of 65734920 is about 403.5822397933.

The spelling of 65734920 in words is "sixty-five million, seven hundred thirty-four thousand, nine hundred twenty".