65470040 has 16 divisors (see below), whose sum is σ = 147307680. Its totient is φ = 26188000.

The previous prime is 65470021. The next prime is 65470049. The reversal of 65470040 is 4007456.

It is a super-2 number, since 2×65470040² = 8572652275203200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65469991 and 65470009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65470049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818336 + ... + 818415.

It is an arithmetic number, because the mean of its divisors is an integer number (9206730).

Almost surely, 2^65470040 is an apocalyptic number.

It is an amenable number.

65470040 is an abundant number, since it is smaller than the sum of its proper divisors (81837640).

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

65470040 is a wasteful number, since it uses less digits than its factorization.

65470040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636762 (or 1636758 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 65470040 is about 8091.3558814330. The cubic root of 65470040 is about 403.0394295068.

Adding to 65470040 its reverse (4007456), we get a palindrome (69477496).

The spelling of 65470040 in words is "sixty-five million, four hundred seventy thousand, forty".