690111001001601 has 32 divisors (see below), whose sum is σ = 1026280848384000. Its totient is φ = 458321642680464.

The previous prime is 690111001001593. The next prime is 690111001001647. The reversal of 690111001001601 is 106100100111096.

It is not a de Polignac number, because 690111001001601 - 2³ = 690111001001593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (690111001001101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1736982910 + ... + 1737380168.

It is an arithmetic number, because the mean of its divisors is an integer number (32071276512000).

Almost surely, 2^{690111001001601} is an apocalyptic number.

It is an amenable number.

690111001001601 is a deficient number, since it is larger than the sum of its proper divisors (336169847382399).

690111001001601 is a wasteful number, since it uses less digits than its factorization.

690111001001601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642170 (or 642164 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

Adding to 690111001001601 its reverse (106100100111096), we get a palindrome (796211101112697).

The spelling of 690111001001601 in words is "six hundred ninety trillion, one hundred eleven billion, one million, one thousand, six hundred one".