70145555 has 8 divisors (see below), whose sum is σ = 84220992. Its totient is φ = 56085568.

The previous prime is 70145521. The next prime is 70145557. The reversal of 70145555 is 55554107.

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

It is a cyclic number.

It is not a de Polignac number, because 70145555 - 2¹⁶ = 70080019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70145557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12239 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (10527624).

Almost surely, 2^70145555 is an apocalyptic number.

70145555 is a deficient number, since it is larger than the sum of its proper divisors (14075437).

70145555 is a wasteful number, since it uses less digits than its factorization.

70145555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7725.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 70145555 is about 8375.2943231865. The cubic root of 70145555 is about 412.4139863511.

The spelling of 70145555 in words is "seventy million, one hundred forty-five thousand, five hundred fifty-five".