70660858 has 4 divisors (see below), whose sum is σ = 105991290. Its totient is φ = 35330428.

The previous prime is 70660847. The next prime is 70660859. The reversal of 70660858 is 85806607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85806607 = 1433 ⋅59879.

It can be written as a sum of positive squares in only one way, i.e., 64915249 + 5745609 = 8057^2 + 2397^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70660858.

It is not an unprimeable number, because it can be changed into a prime (70660859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17665213 + ... + 17665216.

Almost surely, 2^70660858 is an apocalyptic number.

70660858 is a deficient number, since it is larger than the sum of its proper divisors (35330432).

70660858 is a wasteful number, since it uses less digits than its factorization.

70660858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35330431.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 70660858 is about 8406.0013085890. The cubic root of 70660858 is about 413.4214147757.

The spelling of 70660858 in words is "seventy million, six hundred sixty thousand, eight hundred fifty-eight".