66754038 has 16 divisors (see below), whose sum is σ = 143778096. Its totient is φ = 20539680.

The previous prime is 66754033. The next prime is 66754057. The reversal of 66754038 is 83045766.

It is a super-2 number, since 2×66754038² = 8912203178610888, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 66753987 and 66754005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66754033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427833 + ... + 427988.

It is an arithmetic number, because the mean of its divisors is an integer number (8986131).

Almost surely, 2^66754038 is an apocalyptic number.

66754038 is an abundant number, since it is smaller than the sum of its proper divisors (77024058).

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

66754038 is a wasteful number, since it uses less digits than its factorization.

66754038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855839.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 66754038 is about 8170.3144370336. The cubic root of 66754038 is about 405.6571924105.

The spelling of 66754038 in words is "sixty-six million, seven hundred fifty-four thousand, thirty-eight".