70872093 has 6 divisors (see below), whose sum is σ = 102370814. Its totient is φ = 47248056.

The previous prime is 70872089. The next prime is 70872101. The reversal of 70872093 is 39027807.

It can be written as a sum of positive squares in only one way, i.e., 63154809 + 7717284 = 7947^2 + 2778^2 .

It is not a de Polignac number, because 70872093 - 2² = 70872089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70872013) 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 5 ways as a sum of consecutive naturals, for example, 3937330 + ... + 3937347.

Almost surely, 2^70872093 is an apocalyptic number.

It is an amenable number.

70872093 is a deficient number, since it is larger than the sum of its proper divisors (31498721).

70872093 is a wasteful number, since it uses less digits than its factorization.

70872093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7874683 (or 7874680 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 70872093 is about 8418.5564677087. The cubic root of 70872093 is about 413.8329683956.

It can be divided in two parts, 7087 and 2093, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 70872093 in words is "seventy million, eight hundred seventy-two thousand, ninety-three".