690105450 has 48 divisors (see below), whose sum is σ = 1716006240. Its totient is φ = 183539520.

The previous prime is 690105443. The next prime is 690105457. The reversal of 690105450 is 54501096.

It is an interprime number because it is at equal distance from previous prime (690105443) and next prime (690105457).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (690105457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52437 + ... + 64263.

It is an arithmetic number, because the mean of its divisors is an integer number (35750130).

Almost surely, 2^690105450 is an apocalyptic number.

690105450 is an abundant number, since it is smaller than the sum of its proper divisors (1025900790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690105450 is a wasteful number, since it uses less digits than its factorization.

690105450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12231 (or 12226 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 690105450 is about 26269.8582028910. The cubic root of 690105450 is about 883.7006051562.

The spelling of 690105450 in words is "six hundred ninety million, one hundred five thousand, four hundred fifty".