65670438 has 16 divisors (see below), whose sum is σ = 134544816. Its totient is φ = 21356160.

The previous prime is 65670427. The next prime is 65670461. The reversal of 65670438 is 83407656.

65670438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65670438² = 8625212854223688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65670396 and 65670405.

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, 133231 + ... + 133722.

It is an arithmetic number, because the mean of its divisors is an integer number (8409051).

Almost surely, 2^65670438 is an apocalyptic number.

65670438 is an abundant number, since it is smaller than the sum of its proper divisors (68874378).

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

65670438 is a wasteful number, since it uses less digits than its factorization.

65670438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266999.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 65670438 is about 8103.7298819741. The cubic root of 65670438 is about 403.4502333251.

The spelling of 65670438 in words is "sixty-five million, six hundred seventy thousand, four hundred thirty-eight".