64477743 has 16 divisors (see below), whose sum is σ = 94757376. Its totient is φ = 38672640.

The previous prime is 64477729. The next prime is 64477771. The reversal of 64477743 is 34777446.

It is not a de Polignac number, because 64477743 - 2¹⁴ = 64461359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64477695 and 64477704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64477703) 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, 6871 + ... + 13272.

It is an arithmetic number, because the mean of its divisors is an integer number (5922336).

Almost surely, 2^64477743 is an apocalyptic number.

64477743 is a deficient number, since it is larger than the sum of its proper divisors (30279633).

64477743 is a wasteful number, since it uses less digits than its factorization.

64477743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20254.

The product of its digits is 395136, while the sum is 42.

The square root of 64477743 is about 8029.8034222514. The cubic root of 64477743 is about 400.9928315914.

It can be divided in two parts, 644 and 77743, that added together give a palindrome (78387).

The spelling of 64477743 in words is "sixty-four million, four hundred seventy-seven thousand, seven hundred forty-three".