70398490 has 8 divisors (see below), whose sum is σ = 126717300. Its totient is φ = 28159392.

The previous prime is 70398481. The next prime is 70398491. The reversal of 70398490 is 9489307.

It can be written as a sum of positive squares in 2 ways, for example, as 67190809 + 3207681 = 8197^2 + 1791^2 .

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

It is not an unprimeable number, because it can be changed into a prime (70398491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3519915 + ... + 3519934.

Almost surely, 2^70398490 is an apocalyptic number.

70398490 is a deficient number, since it is larger than the sum of its proper divisors (56318810).

70398490 is a wasteful number, since it uses less digits than its factorization.

70398490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039856.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 70398490 is about 8390.3808018468. The cubic root of 70398490 is about 412.9090939967.

The spelling of 70398490 in words is "seventy million, three hundred ninety-eight thousand, four hundred ninety".