690573061 has 4 divisors (see below), whose sum is σ = 691104352. Its totient is φ = 690041772.

The previous prime is 690573043. The next prime is 690573067. The reversal of 690573061 is 160375096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690573061 - 2⁵ = 690573029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 690573061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690573067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263691 + ... + 266296.

It is an arithmetic number, because the mean of its divisors is an integer number (172776088).

Almost surely, 2^690573061 is an apocalyptic number.

It is an amenable number.

690573061 is a deficient number, since it is larger than the sum of its proper divisors (531291).

690573061 is a wasteful number, since it uses less digits than its factorization.

690573061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531290.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 690573061 is about 26278.7568389374. The cubic root of 690573061 is about 883.9001567007.

The spelling of 690573061 in words is "six hundred ninety million, five hundred seventy-three thousand, sixty-one".