690036377 has 4 divisors (see below), whose sum is σ = 691010340. Its totient is φ = 689062416.

The previous prime is 690036337. The next prime is 690036397. The reversal of 690036377 is 773630096.

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 139617856 + 550418521 = 11816^2 + 23461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690036377 is a prime.

It is a super-2 number, since 2×690036377² = 952300403166572258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690036337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485918 + ... + 487335.

It is an arithmetic number, because the mean of its divisors is an integer number (172752585).

Almost surely, 2^690036377 is an apocalyptic number.

It is an amenable number.

690036377 is a deficient number, since it is larger than the sum of its proper divisors (973963).

690036377 is an equidigital number, since it uses as much as digits as its factorization.

690036377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973962.

The product of its (nonzero) digits is 142884, while the sum is 41.

The square root of 690036377 is about 26268.5434883627. The cubic root of 690036377 is about 883.6711208271.

The spelling of 690036377 in words is "six hundred ninety million, thirty-six thousand, three hundred seventy-seven".