69490 has 8 divisors (see below), whose sum is σ = 125100. Its totient is φ = 27792.

The previous prime is 69481. The next prime is 69491. The reversal of 69490 is 9496.

It can be written as a sum of positive squares in 2 ways, for example, as 68121 + 1369 = 261^2 + 37^2 .

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

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

It is not an unprimeable number, because it can be changed into a prime (69491) by changing a digit.

69490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3465 + ... + 3484.

2⁶⁹⁴⁹⁰ is an apocalyptic number.

69490 is a deficient number, since it is larger than the sum of its proper divisors (55610).

69490 is a wasteful number, since it uses less digits than its factorization.

69490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 69490 is about 263.6095597660. The cubic root of 69490 is about 41.1125205804.

It can be divided in two parts, 694 and 90, that added together give a square (784 = 28²).

The spelling of 69490 in words is "sixty-nine thousand, four hundred ninety".