65530740 has 48 divisors (see below), whose sum is σ = 200168640. Its totient is φ = 15886080.

The previous prime is 65530739. The next prime is 65530771. The reversal of 65530740 is 4703556.

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

It is a junction number, because it is equal to n+sod(n) for n = 65530698 and 65530707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48985 + ... + 50304.

It is an arithmetic number, because the mean of its divisors is an integer number (4170180).

Almost surely, 2^65530740 is an apocalyptic number.

65530740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65530740 is an abundant number, since it is smaller than the sum of its proper divisors (134637900).

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

65530740 is a wasteful number, since it uses less digits than its factorization.

65530740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99312 (or 99310 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 65530740 is about 8095.1059288931. The cubic root of 65530740 is about 403.1639492443.

The spelling of 65530740 in words is "sixty-five million, five hundred thirty thousand, seven hundred forty".