35687365921 has 3 divisors (see below), whose sum is σ = 35687554833. Its totient is φ = 35687177010.

The previous prime is 35687365877. The next prime is 35687365937. The reversal of 35687365921 is 12956378653.

The square root of 35687365921 is 188911.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 35687365921 - 2⁷ = 35687365793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35687365981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 94456 + ... + 283366.

It is an arithmetic number, because the mean of its divisors is an integer number (11895851611).

Almost surely, 2^35687365921 is an apocalyptic number.

35687365921 is the 188911-st square number.

35687365921 is the 94456-th centered octagonal number.

It is an amenable number.

35687365921 is a deficient number, since it is larger than the sum of its proper divisors (188912).

35687365921 is an frugal number, since it uses more digits than its factorization.

35687365921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377822 (or 188911 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 55.

The spelling of 35687365921 in words is "thirty-five billion, six hundred eighty-seven million, three hundred sixty-five thousand, nine hundred twenty-one".