690195041 has 4 divisors (see below), whose sum is σ = 713994900. Its totient is φ = 666395184.

The previous prime is 690195013. The next prime is 690195043. The reversal of 690195041 is 140591096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 479829025 + 210366016 = 21905^2 + 14504^2 .

It is a cyclic number.

It is not a de Polignac number, because 690195041 - 2⁶ = 690194977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690194992 and 690195010.

It is not an unprimeable number, because it can be changed into a prime (690195043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11899886 + ... + 11899943.

It is an arithmetic number, because the mean of its divisors is an integer number (178498725).

Almost surely, 2^690195041 is an apocalyptic number.

It is an amenable number.

690195041 is a deficient number, since it is larger than the sum of its proper divisors (23799859).

690195041 is a wasteful number, since it uses less digits than its factorization.

690195041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23799858.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 690195041 is about 26271.5633527965. The cubic root of 690195041 is about 883.7388448170.

The spelling of 690195041 in words is "six hundred ninety million, one hundred ninety-five thousand, forty-one".