67641465 has 16 divisors (see below), whose sum is σ = 108358848. Its totient is φ = 36031296.

The previous prime is 67641437. The next prime is 67641467. The reversal of 67641465 is 56414676.

It is not a de Polignac number, because 67641465 - 2⁷ = 67641337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67641467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12694 + ... + 17216.

It is an arithmetic number, because the mean of its divisors is an integer number (6772428).

Almost surely, 2^67641465 is an apocalyptic number.

It is an amenable number.

67641465 is a deficient number, since it is larger than the sum of its proper divisors (40717383).

67641465 is a wasteful number, since it uses less digits than its factorization.

67641465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528.

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

The square root of 67641465 is about 8224.4431422437. The cubic root of 67641465 is about 407.4468848181.

The spelling of 67641465 in words is "sixty-seven million, six hundred forty-one thousand, four hundred sixty-five".