64773541 has 12 divisors (see below), whose sum is σ = 75677760. Its totient is φ = 55277880.

The previous prime is 64773529. The next prime is 64773547. The reversal of 64773541 is 14537746.

It is not a de Polignac number, because 64773541 - 2¹⁵ = 64740773 is a prime.

It is a super-2 number, since 2×64773541² = 8391223227357362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64773541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64773547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8946 + ... + 14476.

It is an arithmetic number, because the mean of its divisors is an integer number (6306480).

Almost surely, 2^64773541 is an apocalyptic number.

It is an amenable number.

64773541 is a deficient number, since it is larger than the sum of its proper divisors (10904219).

64773541 is a wasteful number, since it uses less digits than its factorization.

64773541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784 (or 5777 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 64773541 is about 8048.2011033522. The cubic root of 64773541 is about 401.6050943155.

The spelling of 64773541 in words is "sixty-four million, seven hundred seventy-three thousand, five hundred forty-one".