690180051 has 8 divisors (see below), whose sum is σ = 1003898304. Its totient is φ = 418290920.

The previous prime is 690180041. The next prime is 690180091. The reversal of 690180051 is 150081096.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690180051 - 2¹¹ = 690178003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690180041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10457241 + ... + 10457306.

It is an arithmetic number, because the mean of its divisors is an integer number (125487288).

Almost surely, 2^690180051 is an apocalyptic number.

690180051 is a deficient number, since it is larger than the sum of its proper divisors (313718253).

690180051 is a wasteful number, since it uses less digits than its factorization.

690180051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20914561.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 690180051 is about 26271.2780617921. The cubic root of 690180051 is about 883.7324469438.

The spelling of 690180051 in words is "six hundred ninety million, one hundred eighty thousand, fifty-one".