64242807 has 4 divisors (see below), whose sum is σ = 85657080. Its totient is φ = 42828536.

The previous prime is 64242803. The next prime is 64242811. The reversal of 64242807 is 70824246.

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 (64242803) and next prime (64242811).

It is a cyclic number.

It is not a de Polignac number, because 64242807 - 2² = 64242803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64242803) 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, 10707132 + ... + 10707137.

It is an arithmetic number, because the mean of its divisors is an integer number (21414270).

Almost surely, 2^64242807 is an apocalyptic number.

64242807 is a deficient number, since it is larger than the sum of its proper divisors (21414273).

64242807 is a wasteful number, since it uses less digits than its factorization.

64242807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21414272.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 64242807 is about 8015.1610713697. The cubic root of 64242807 is about 400.5052095563.

The spelling of 64242807 in words is "sixty-four million, two hundred forty-two thousand, eight hundred seven".