690348379 has 4 divisors (see below), whose sum is σ = 788969584. Its totient is φ = 591727176.

The previous prime is 690348377. The next prime is 690348383. The reversal of 690348379 is 973843096.

690348379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690348379 - 2¹ = 690348377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690348377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49310592 + ... + 49310605.

It is an arithmetic number, because the mean of its divisors is an integer number (197242396).

Almost surely, 2^690348379 is an apocalyptic number.

690348379 is a deficient number, since it is larger than the sum of its proper divisors (98621205).

690348379 is an equidigital number, since it uses as much as digits as its factorization.

690348379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98621204.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 690348379 is about 26274.4815172441. The cubic root of 690348379 is about 883.8042856006.

The spelling of 690348379 in words is "six hundred ninety million, three hundred forty-eight thousand, three hundred seventy-nine".