690347453 has 4 divisors (see below), whose sum is σ = 690872160. Its totient is φ = 689822748.

The previous prime is 690347429. The next prime is 690347459. The reversal of 690347453 is 354743096.

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 690347453 - 2¹⁰ = 690346429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 690347453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690347459) 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, 260375 + ... + 263012.

It is an arithmetic number, because the mean of its divisors is an integer number (172718040).

Almost surely, 2^690347453 is an apocalyptic number.

It is an amenable number.

690347453 is a deficient number, since it is larger than the sum of its proper divisors (524707).

690347453 is a wasteful number, since it uses less digits than its factorization.

690347453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524706.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 690347453 is about 26274.4638955774. The cubic root of 690347453 is about 883.8038904363.

The spelling of 690347453 in words is "six hundred ninety million, three hundred forty-seven thousand, four hundred fifty-three".