66602741 has 4 divisors (see below), whose sum is σ = 66901632. Its totient is φ = 66303852.

The previous prime is 66602717. The next prime is 66602747. The reversal of 66602741 is 14720666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66602741 - 2¹⁸ = 66340597 is a prime.

It is a super-3 number, since 3×66602741³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66602698 and 66602707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66602747) 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, 149111 + ... + 149556.

It is an arithmetic number, because the mean of its divisors is an integer number (16725408).

Almost surely, 2^66602741 is an apocalyptic number.

It is an amenable number.

66602741 is a deficient number, since it is larger than the sum of its proper divisors (298891).

66602741 is a wasteful number, since it uses less digits than its factorization.

66602741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298890.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66602741 is about 8161.0502387867. The cubic root of 66602741 is about 405.3504886523.

The spelling of 66602741 in words is "sixty-six million, six hundred two thousand, seven hundred forty-one".