70019999 has 8 divisors (see below), whose sum is σ = 80599680. Its totient is φ = 59584536.

The previous prime is 70019951. The next prime is 70020001. The reversal of 70019999 is 99991007.

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 70019999 - 2¹² = 70015903 is a prime.

70019999 is a modest number, since divided by 9999 gives 7001 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70019909) 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, 35009 + ... + 36954.

It is an arithmetic number, because the mean of its divisors is an integer number (10074960).

Almost surely, 2^70019999 is an apocalyptic number.

70019999 is a deficient number, since it is larger than the sum of its proper divisors (10579681).

70019999 is a wasteful number, since it uses less digits than its factorization.

70019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72109.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 70019999 is about 8367.7953488359. The cubic root of 70019999 is about 412.1677746174.

The spelling of 70019999 in words is "seventy million, nineteen thousand, nine hundred ninety-nine".