737666 has 4 divisors (see below), whose sum is σ = 1106502. Its totient is φ = 368832.

The previous prime is 737663. The next prime is 737683. The reversal of 737666 is 666737.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 73441 = 815^2 + 271^2 .

It is a super-2 number, since 2×737666² = 1088302255112, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 737666.

It is not an unprimeable number, because it can be changed into a prime (737663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184415 + ... + 184418.

2⁷³⁷⁶⁶⁶ is an apocalyptic number.

737666 is a deficient number, since it is larger than the sum of its proper divisors (368836).

737666 is a wasteful number, since it uses less digits than its factorization.

737666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368835.

The product of its digits is 31752, while the sum is 35.

The square root of 737666 is about 858.8748453646. The cubic root of 737666 is about 90.3552216430.

It can be divided in two parts, 7 and 37666, that added together give a palindrome (37673).

The spelling of 737666 in words is "seven hundred thirty-seven thousand, six hundred sixty-six".