70723493 has 4 divisors (see below), whose sum is σ = 73004928. Its totient is φ = 68442060.

The previous prime is 70723487. The next prime is 70723501. The reversal of 70723493 is 39432707.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70723493 - 2¹⁰ = 70722469 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 (70723693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140671 + ... + 1140732.

It is an arithmetic number, because the mean of its divisors is an integer number (18251232).

Almost surely, 2^70723493 is an apocalyptic number.

It is an amenable number.

70723493 is a deficient number, since it is larger than the sum of its proper divisors (2281435).

70723493 is a wasteful number, since it uses less digits than its factorization.

70723493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281434.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 70723493 is about 8409.7260954207. The cubic root of 70723493 is about 413.5435333180.

The spelling of 70723493 in words is "seventy million, seven hundred twenty-three thousand, four hundred ninety-three".