42664783 has 4 divisors (see below), whose sum is σ = 48759760. Its totient is φ = 36569808.

The previous prime is 42664753. The next prime is 42664813. The reversal of 42664783 is 38746624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42664753) and next prime (42664813).

It is a cyclic number.

It is not a de Polignac number, because 42664783 - 2¹³ = 42656591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42664733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3047478 + ... + 3047491.

It is an arithmetic number, because the mean of its divisors is an integer number (12189940).

Almost surely, 2^42664783 is an apocalyptic number.

42664783 is a deficient number, since it is larger than the sum of its proper divisors (6094977).

42664783 is an equidigital number, since it uses as much as digits as its factorization.

42664783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6094976.

The product of its digits is 193536, while the sum is 40.

The square root of 42664783 is about 6531.8284576373. The cubic root of 42664783 is about 349.4270435238.

The spelling of 42664783 in words is "forty-two million, six hundred sixty-four thousand, seven hundred eighty-three".