690718741 has 4 divisors (see below), whose sum is σ = 693345312. Its totient is φ = 688092172.

The previous prime is 690718739. The next prime is 690718747. The reversal of 690718741 is 147817096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690718741 - 2¹ = 690718739 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 (690718747) 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, 1312891 + ... + 1313416.

It is an arithmetic number, because the mean of its divisors is an integer number (173336328).

Almost surely, 2^690718741 is an apocalyptic number.

It is an amenable number.

690718741 is a deficient number, since it is larger than the sum of its proper divisors (2626571).

690718741 is a wasteful number, since it uses less digits than its factorization.

690718741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626570.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 690718741 is about 26281.5285133875. The cubic root of 690718741 is about 883.9623067847.

The spelling of 690718741 in words is "six hundred ninety million, seven hundred eighteen thousand, seven hundred forty-one".