690244671 has 8 divisors (see below), whose sum is σ = 926947840. Its totient is φ = 456852312.

The previous prime is 690244669. The next prime is 690244699. The reversal of 690244671 is 176442096.

It is a happy number.

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

It is not a de Polignac number, because 690244671 - 2¹ = 690244669 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 (690244661) 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, 827215 + ... + 828048.

It is an arithmetic number, because the mean of its divisors is an integer number (115868480).

Almost surely, 2^690244671 is an apocalyptic number.

690244671 is a deficient number, since it is larger than the sum of its proper divisors (236703169).

690244671 is a wasteful number, since it uses less digits than its factorization.

690244671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655405.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 690244671 is about 26272.5078932332. The cubic root of 690244671 is about 883.7600267077.

The spelling of 690244671 in words is "six hundred ninety million, two hundred forty-four thousand, six hundred seventy-one".