690074672051 has 4 divisors (see below), whose sum is σ = 690082368504. Its totient is φ = 690066975600.

The previous prime is 690074672017. The next prime is 690074672117. The reversal of 690074672051 is 150276470096.

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

It is a cyclic number.

It is not a de Polignac number, because 690074672051 - 2¹⁸ = 690074409907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690074671987 and 690074672005.

It is not an unprimeable number, because it can be changed into a prime (690074662051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3712130 + ... + 3893591.

It is an arithmetic number, because the mean of its divisors is an integer number (172520592126).

Almost surely, 2^690074672051 is an apocalyptic number.

690074672051 is a deficient number, since it is larger than the sum of its proper divisors (7696453).

690074672051 is an equidigital number, since it uses as much as digits as its factorization.

690074672051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7696452.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 690074672051 in words is "six hundred ninety billion, seventy-four million, six hundred seventy-two thousand, fifty-one".