70089945 has 16 divisors (see below), whose sum is σ = 113139072. Its totient is φ = 37049600.

The previous prime is 70089941. The next prime is 70089949. The reversal of 70089945 is 54998007.

It is an interprime number because it is at equal distance from previous prime (70089941) and next prime (70089949).

It is not a de Polignac number, because 70089945 - 2² = 70089941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70089897 and 70089906.

It is not an unprimeable number, because it can be changed into a prime (70089941) 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, 18981 + ... + 22370.

It is an arithmetic number, because the mean of its divisors is an integer number (7071192).

Almost surely, 2^70089945 is an apocalyptic number.

It is an amenable number.

70089945 is a deficient number, since it is larger than the sum of its proper divisors (43049127).

70089945 is a wasteful number, since it uses less digits than its factorization.

70089945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41472.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 70089945 is about 8371.9737816121. The cubic root of 70089945 is about 412.3049730046.

The spelling of 70089945 in words is "seventy million, eighty-nine thousand, nine hundred forty-five".