145697098 has 4 divisors (see below), whose sum is σ = 218545650. Its totient is φ = 72848548.

The previous prime is 145697087. The next prime is 145697107. The reversal of 145697098 is 890796541.

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., 110733529 + 34963569 = 10523^2 + 5913^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36424273 + ... + 36424276.

Almost surely, 2^145697098 is an apocalyptic number.

145697098 is a deficient number, since it is larger than the sum of its proper divisors (72848552).

145697098 is an equidigital number, since it uses as much as digits as its factorization.

145697098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72848551.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 145697098 is about 12070.5052918260. The cubic root of 145697098 is about 526.1993418136.

The spelling of 145697098 in words is "one hundred forty-five million, six hundred ninety-seven thousand, ninety-eight".