690862445 has 16 divisors (see below), whose sum is σ = 1020351360. Its totient is φ = 437292864.

The previous prime is 690862433. The next prime is 690862457. The reversal of 690862445 is 544268096.

It is an interprime number because it is at equal distance from previous prime (690862433) and next prime (690862457).

It is a cyclic number.

It is not a de Polignac number, because 690862445 - 2²⁴ = 674085229 is a prime.

It is a super-2 number, since 2×690862445² = 954581835822756050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 690862396 and 690862405.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 758735 + ... + 759644.

It is an arithmetic number, because the mean of its divisors is an integer number (63771960).

Almost surely, 2^690862445 is an apocalyptic number.

690862445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

690862445 is a deficient number, since it is larger than the sum of its proper divisors (329488915).

690862445 is a wasteful number, since it uses less digits than its factorization.

690862445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518404.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 690862445 is about 26284.2623065590. The cubic root of 690862445 is about 884.0236053053.

The spelling of 690862445 in words is "six hundred ninety million, eight hundred sixty-two thousand, four hundred forty-five".