66837342 has 32 divisors (see below), whose sum is σ = 157046400. Its totient is φ = 18695520.

The previous prime is 66837317. The next prime is 66837343. The reversal of 66837342 is 24373866.

It is a super-3 number, since 3×66837342³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 66837342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66837343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38092 + ... + 39807.

It is an arithmetic number, because the mean of its divisors is an integer number (4907700).

Almost surely, 2^66837342 is an apocalyptic number.

66837342 is an abundant number, since it is smaller than the sum of its proper divisors (90209058).

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

66837342 is a wasteful number, since it uses less digits than its factorization.

66837342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77928.

The product of its digits is 145152, while the sum is 39.

The square root of 66837342 is about 8175.4108153658. The cubic root of 66837342 is about 405.8258654502.

The spelling of 66837342 in words is "sixty-six million, eight hundred thirty-seven thousand, three hundred forty-two".