690270477 has 8 divisors (see below), whose sum is σ = 991157664. Its totient is φ = 424781808.

The previous prime is 690270473. The next prime is 690270487. The reversal of 690270477 is 774072096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 690270477 - 2² = 690270473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690270473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8849583 + ... + 8849660.

It is an arithmetic number, because the mean of its divisors is an integer number (123894708).

Almost surely, 2^690270477 is an apocalyptic number.

It is an amenable number.

690270477 is a deficient number, since it is larger than the sum of its proper divisors (300887187).

690270477 is a wasteful number, since it uses less digits than its factorization.

690270477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17699259.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 690270477 is about 26272.9990103909. Note that the first 3 decimals coincide. The cubic root of 690270477 is about 883.7710402067.

The spelling of 690270477 in words is "six hundred ninety million, two hundred seventy thousand, four hundred seventy-seven".