65070421 has 8 divisors (see below), whose sum is σ = 73764320. Its totient is φ = 56903472.

The previous prime is 65070391. The next prime is 65070431. The reversal of 65070421 is 12407056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65070421 - 2⁵ = 65070389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65070431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131475 + ... + 131968.

It is an arithmetic number, because the mean of its divisors is an integer number (9220540).

Almost surely, 2^65070421 is an apocalyptic number.

It is an amenable number.

65070421 is a deficient number, since it is larger than the sum of its proper divisors (8693899).

65070421 is a wasteful number, since it uses less digits than its factorization.

65070421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263475.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 65070421 is about 8066.6238910712. The cubic root of 65070421 is about 402.2177252628.

Adding to 65070421 its reverse (12407056), we get a palindrome (77477477).

The spelling of 65070421 in words is "sixty-five million, seventy thousand, four hundred twenty-one".