690741 has 8 divisors (see below), whose sum is σ = 1023360. Its totient is φ = 460476.

The previous prime is 690721. The next prime is 690757. The reversal of 690741 is 147096.

It is not a de Polignac number, because 690741 - 2¹⁴ = 674357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 25583 = 690741 / (6 + 9 + 0 + 7 + 4 + 1).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690721) 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, 12765 + ... + 12818.

It is an arithmetic number, because the mean of its divisors is an integer number (127920).

2⁶⁹⁰⁷⁴¹ is an apocalyptic number.

It is an amenable number.

690741 is a deficient number, since it is larger than the sum of its proper divisors (332619).

690741 is a wasteful number, since it uses less digits than its factorization.

690741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25592 (or 25586 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 690741 is about 831.1082961925. The cubic root of 690741 is about 88.3971802162.

It can be divided in two parts, 690 and 741, that added together give a triangular number (1431 = T₅₃).

The spelling of 690741 in words is "six hundred ninety thousand, seven hundred forty-one".