70001945 has 8 divisors (see below), whose sum is σ = 90464136. Its totient is φ = 51693696.

The previous prime is 70001927. The next prime is 70001957. The reversal of 70001945 is 54910007.

It can be written as a sum of positive squares in 4 ways, for example, as 3888784 + 66113161 = 1972^2 + 8131^2 .

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 70001945 - 2⁶ = 70001881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538412 + ... + 538541.

It is an arithmetic number, because the mean of its divisors is an integer number (11308017).

Almost surely, 2^70001945 is an apocalyptic number.

It is an amenable number.

70001945 is a deficient number, since it is larger than the sum of its proper divisors (20462191).

70001945 is a wasteful number, since it uses less digits than its factorization.

70001945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076971.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 70001945 is about 8366.7165005156. The cubic root of 70001945 is about 412.1323470407.

The spelling of 70001945 in words is "seventy million, one thousand, nine hundred forty-five".