737661 has 8 divisors (see below), whose sum is σ = 991584. Its totient is φ = 487760.

The previous prime is 737657. The next prime is 737663. The reversal of 737661 is 166737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 737661 - 2² = 737657 is a prime.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 737661.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546 + ... + 1331.

It is an arithmetic number, because the mean of its divisors is an integer number (123948).

2⁷³⁷⁶⁶¹ is an apocalyptic number.

It is an amenable number.

737661 is a deficient number, since it is larger than the sum of its proper divisors (253923).

737661 is a wasteful number, since it uses less digits than its factorization.

737661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its digits is 5292, while the sum is 30.

The square root of 737661 is about 858.8719345746. The cubic root of 737661 is about 90.3550174959.

The spelling of 737661 in words is "seven hundred thirty-seven thousand, six hundred sixty-one".