645113098 has 8 divisors (see below), whose sum is σ = 1105908192. Its totient is φ = 276477036.

The previous prime is 645113089. The next prime is 645113107. The reversal of 645113098 is 890311546.

It is an interprime number because it is at equal distance from previous prime (645113089) and next prime (645113107).

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

It is a super-2 number, since 2×645113098² = 832341818422315208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23039740 + ... + 23039767.

It is an arithmetic number, because the mean of its divisors is an integer number (138238524).

Almost surely, 2^645113098 is an apocalyptic number.

645113098 is a deficient number, since it is larger than the sum of its proper divisors (460795094).

645113098 is a wasteful number, since it uses less digits than its factorization.

645113098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46079516.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 645113098 is about 25399.0767155029. The cubic root of 645113098 is about 864.0627571084.

The spelling of 645113098 in words is "six hundred forty-five million, one hundred thirteen thousand, ninety-eight".