690428541 has 12 divisors (see below), whose sum is σ = 1011868256. Its totient is φ = 418441320.

The previous prime is 690428539. The next prime is 690428551. The reversal of 690428541 is 145824096.

It is not a de Polignac number, because 690428541 - 2¹ = 690428539 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 690428541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690428551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 950641 + ... + 951366.

Almost surely, 2^690428541 is an apocalyptic number.

It is an amenable number.

690428541 is a deficient number, since it is larger than the sum of its proper divisors (321439715).

690428541 is a wasteful number, since it uses less digits than its factorization.

690428541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902032 (or 1902021 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 690428541 is about 26276.0069455007. The cubic root of 690428541 is about 883.8384928595.

The spelling of 690428541 in words is "six hundred ninety million, four hundred twenty-eight thousand, five hundred forty-one".