690065761 has 8 divisors (see below), whose sum is σ = 860341824. Its totient is φ = 537713520.

The previous prime is 690065749. The next prime is 690065809. The reversal of 690065761 is 167560096.

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 690065761 - 2⁵ = 690065729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690065741) 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, 4480870 + ... + 4481023.

It is an arithmetic number, because the mean of its divisors is an integer number (107542728).

Almost surely, 2^690065761 is an apocalyptic number.

It is an amenable number.

690065761 is a deficient number, since it is larger than the sum of its proper divisors (170276063).

690065761 is a wasteful number, since it uses less digits than its factorization.

690065761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8961911.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 690065761 is about 26269.1027825466. The cubic root of 690065761 is about 883.6836638488.

The spelling of 690065761 in words is "six hundred ninety million, sixty-five thousand, seven hundred sixty-one".