70398898 has 4 divisors (see below), whose sum is σ = 105598350. Its totient is φ = 35199448.

The previous prime is 70398877. The next prime is 70398899. The reversal of 70398898 is 89889307.

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., 67519089 + 2879809 = 8217^2 + 1697^2 .

It is a super-2 number, since 2×70398898² = 9912009679228808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70398899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17599723 + ... + 17599726.

Almost surely, 2^70398898 is an apocalyptic number.

70398898 is a deficient number, since it is larger than the sum of its proper divisors (35199452).

70398898 is a wasteful number, since it uses less digits than its factorization.

70398898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35199451.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 70398898 is about 8390.4051153684. The cubic root of 70398898 is about 412.9098916776.

The spelling of 70398898 in words is "seventy million, three hundred ninety-eight thousand, eight hundred ninety-eight".