64542903 has 4 divisors (see below), whose sum is σ = 86057208. Its totient is φ = 43028600.

The previous prime is 64542901. The next prime is 64542937. The reversal of 64542903 is 30924546.

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

It is a cyclic number.

It is not a de Polignac number, because 64542903 - 2¹ = 64542901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64542901) 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, 10757148 + ... + 10757153.

It is an arithmetic number, because the mean of its divisors is an integer number (21514302).

Almost surely, 2^64542903 is an apocalyptic number.

64542903 is a deficient number, since it is larger than the sum of its proper divisors (21514305).

64542903 is a wasteful number, since it uses less digits than its factorization.

64542903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21514304.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 64542903 is about 8033.8597821968. The cubic root of 64542903 is about 401.1278647305.

The spelling of 64542903 in words is "sixty-four million, five hundred forty-two thousand, nine hundred three".