690000098 has 4 divisors (see below), whose sum is σ = 1035000150. Its totient is φ = 345000048.

The previous prime is 690000061. The next prime is 690000107. The reversal of 690000098 is 890000096.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 505665169 + 184334929 = 22487^2 + 13577^2 .

It is a super-2 number, since 2×690000098² = 952200270480019208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172500023 + ... + 172500026.

Almost surely, 2^690000098 is an apocalyptic number.

690000098 is a deficient number, since it is larger than the sum of its proper divisors (345000052).

690000098 is a wasteful number, since it uses less digits than its factorization.

690000098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345000051.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 690000098 is about 26267.8529385254. The cubic root of 690000098 is about 883.6556340753.

The spelling of 690000098 in words is "six hundred ninety million, ninety-eight", and thus it is an aban number.