70723904 has 14 divisors (see below), whose sum is σ = 140342874. Its totient is φ = 35361920.

The previous prime is 70723879. The next prime is 70723943. The reversal of 70723904 is 40932707.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64770304 + 5953600 = 8048^2 + 2440^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552467 + ... + 552594.

It is an arithmetic number, because the mean of its divisors is an integer number (10024491).

Almost surely, 2^70723904 is an apocalyptic number.

It is an amenable number.

70723904 is a deficient number, since it is larger than the sum of its proper divisors (69618970).

70723904 is a wasteful number, since it uses less digits than its factorization.

70723904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105073 (or 1105063 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 70723904 is about 8409.7505313773. The cubic root of 70723904 is about 413.5443344005.

70723904 divided by its sum of digits (32) gives a palindrome (2210122).

The spelling of 70723904 in words is "seventy million, seven hundred twenty-three thousand, nine hundred four".