64740541 has 4 divisors (see below), whose sum is σ = 65102400. Its totient is φ = 64378684.

The previous prime is 64740527. The next prime is 64740563. The reversal of 64740541 is 14504746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14504746 = 2 ⋅7252373.

It is a cyclic number.

It is not a de Polignac number, because 64740541 - 2⁵ = 64740509 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 (64740521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180661 + ... + 181018.

It is an arithmetic number, because the mean of its divisors is an integer number (16275600).

Almost surely, 2^64740541 is an apocalyptic number.

It is an amenable number.

64740541 is a deficient number, since it is larger than the sum of its proper divisors (361859).

64740541 is a wasteful number, since it uses less digits than its factorization.

64740541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361858.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 64740541 is about 8046.1506945868. The cubic root of 64740541 is about 401.5368811779.

The spelling of 64740541 in words is "sixty-four million, seven hundred forty thousand, five hundred forty-one".