690522241 has 8 divisors (see below), whose sum is σ = 718413824. Its totient is φ = 662981760.

The previous prime is 690522229. The next prime is 690522299. The reversal of 690522241 is 142225096.

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 690522241 - 2¹⁵ = 690489473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690522211) 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, 83760 + ... + 91633.

It is an arithmetic number, because the mean of its divisors is an integer number (89801728).

Almost surely, 2^690522241 is an apocalyptic number.

It is an amenable number.

690522241 is a deficient number, since it is larger than the sum of its proper divisors (27891583).

690522241 is a wasteful number, since it uses less digits than its factorization.

690522241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175551.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 690522241 is about 26277.7898804294. The cubic root of 690522241 is about 883.8784737871.

The spelling of 690522241 in words is "six hundred ninety million, five hundred twenty-two thousand, two hundred forty-one".