66361542 has 32 divisors (see below), whose sum is σ = 143308032. Its totient is φ = 20365344.

The previous prime is 66361531. The next prime is 66361553. The reversal of 66361542 is 24516366.

It is an interprime number because it is at equal distance from previous prime (66361531) and next prime (66361553).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37113 + ... + 38859.

It is an arithmetic number, because the mean of its divisors is an integer number (4478376).

Almost surely, 2^66361542 is an apocalyptic number.

66361542 is an abundant number, since it is smaller than the sum of its proper divisors (76946490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66361542 is a wasteful number, since it uses less digits than its factorization.

66361542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252.

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

The square root of 66361542 is about 8146.2593869825. The cubic root of 66361542 is about 404.8605769132.

The spelling of 66361542 in words is "sixty-six million, three hundred sixty-one thousand, five hundred forty-two".