690049647 has 12 divisors (see below), whose sum is σ = 1139129680. Its totient is φ = 394314048.

The previous prime is 690049609. The next prime is 690049651. The reversal of 690049647 is 746940096.

It is not a de Polignac number, because 690049647 - 2¹⁹ = 689525359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690049747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5476522 + ... + 5476647.

Almost surely, 2^690049647 is an apocalyptic number.

690049647 is a deficient number, since it is larger than the sum of its proper divisors (449080033).

690049647 is a wasteful number, since it uses less digits than its factorization.

690049647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10953182 (or 10953179 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 690049647 is about 26268.7960706234. The cubic root of 690049647 is about 883.6767853790.

The spelling of 690049647 in words is "six hundred ninety million, forty-nine thousand, six hundred forty-seven".