70739109 has 32 divisors (see below), whose sum is σ = 126080000. Its totient is φ = 38292912.

The previous prime is 70739107. The next prime is 70739111. The reversal of 70739109 is 90193707.

It is an interprime number because it is at equal distance from previous prime (70739107) and next prime (70739111).

It is not a de Polignac number, because 70739109 - 2¹ = 70739107 is a prime.

It is a super-2 number, since 2×70739109² = 10008043084227762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70739107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6259 + ... + 13440.

It is an arithmetic number, because the mean of its divisors is an integer number (3940000).

Almost surely, 2^70739109 is an apocalyptic number.

It is an amenable number.

70739109 is a deficient number, since it is larger than the sum of its proper divisors (55340891).

70739109 is a wasteful number, since it uses less digits than its factorization.

70739109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19734 (or 19728 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 70739109 is about 8410.6544929631. The cubic root of 70739109 is about 413.5739683747.

The spelling of 70739109 in words is "seventy million, seven hundred thirty-nine thousand, one hundred nine".