66024542 has 4 divisors (see below), whose sum is σ = 99036816. Its totient is φ = 33012270.

The previous prime is 66024527. The next prime is 66024557. The reversal of 66024542 is 24542066.

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 (66024527) and next prime (66024557).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16506134 + ... + 16506137.

It is an arithmetic number, because the mean of its divisors is an integer number (24759204).

Almost surely, 2^66024542 is an apocalyptic number.

66024542 is a deficient number, since it is larger than the sum of its proper divisors (33012274).

66024542 is a wasteful number, since it uses less digits than its factorization.

66024542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33012273.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 66024542 is about 8125.5487199327. The cubic root of 66024542 is about 404.1740868207.

It can be divided in two parts, 66024 and 542, that added together give a palindrome (66566).

The spelling of 66024542 in words is "sixty-six million, twenty-four thousand, five hundred forty-two".