65072481 has 8 divisors (see below), whose sum is σ = 91867104. Its totient is φ = 40829760.

The previous prime is 65072479. The next prime is 65072489. The reversal of 65072481 is 18427056.

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

It is not a de Polignac number, because 65072481 - 2¹ = 65072479 is a prime.

It is a super-2 number, since 2×65072481² = 8468855566990722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65072489) 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, 637915 + ... + 638016.

It is an arithmetic number, because the mean of its divisors is an integer number (11483388).

Almost surely, 2^65072481 is an apocalyptic number.

It is an amenable number.

65072481 is a deficient number, since it is larger than the sum of its proper divisors (26794623).

65072481 is a wasteful number, since it uses less digits than its factorization.

65072481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275951.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 65072481 is about 8066.7515766881. The cubic root of 65072481 is about 402.2219696888.

The spelling of 65072481 in words is "sixty-five million, seventy-two thousand, four hundred eighty-one".