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65340740 = 2253267037
BaseRepresentation
bin1111100101000…
…0010101000100
311112221122122102
43321100111010
5113211400430
610252251232
71422246533
oct371202504
9145848572
1065340740
1133979513
1219a70b18
13106c9b7a
14896c31a
155b0a345
hex3e50544

65340740 has 12 divisors (see below), whose sum is σ = 137215596. Its totient is φ = 26136288.

The previous prime is 65340739. The next prime is 65340749. The reversal of 65340740 is 4704356.

It can be written as a sum of positive squares in 2 ways, for example, as 15100996 + 50239744 = 3886^2 + 7088^2 .

It is not an unprimeable number, because it can be changed into a prime (65340749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1633499 + ... + 1633538.

It is an arithmetic number, because the mean of its divisors is an integer number (11434633).

Almost surely, 265340740 is an apocalyptic number.

It is an amenable number.

65340740 is an abundant number, since it is smaller than the sum of its proper divisors (71874856).

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

65340740 is a wasteful number, since it uses less digits than its factorization.

65340740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267046 (or 3267044 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 65340740 is about 8083.3619243481. The cubic root of 65340740 is about 402.7739271856.

The spelling of 65340740 in words is "sixty-five million, three hundred forty thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 3267037 6534074 13068148 16335185 32670370 65340740