70145245 has 16 divisors (see below), whose sum is σ = 89187840. Its totient is φ = 52812864.

The previous prime is 70145227. The next prime is 70145249. The reversal of 70145245 is 54254107.

It is a cyclic number.

It is not a de Polignac number, because 70145245 - 2¹⁵ = 70112477 is a prime.

It is a super-2 number, since 2×70145245² = 9840710792220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70145249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12564 + ... + 17266.

It is an arithmetic number, because the mean of its divisors is an integer number (5574240).

Almost surely, 2^70145245 is an apocalyptic number.

It is an amenable number.

70145245 is a deficient number, since it is larger than the sum of its proper divisors (19042595).

70145245 is a wasteful number, since it uses less digits than its factorization.

70145245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 70145245 is about 8375.2758163538. The cubic root of 70145245 is about 412.4133788119.

The spelling of 70145245 in words is "seventy million, one hundred forty-five thousand, two hundred forty-five".