70663994 has 4 divisors (see below), whose sum is σ = 105995994. Its totient is φ = 35331996.

The previous prime is 70663993. The next prime is 70664003. The reversal of 70663994 is 49936607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 30658369 = 6325^2 + 5537^2 .

It is not an unprimeable number, because it can be changed into a prime (70663991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17665997 + ... + 17666000.

Almost surely, 2^70663994 is an apocalyptic number.

70663994 is a deficient number, since it is larger than the sum of its proper divisors (35332000).

70663994 is a wasteful number, since it uses less digits than its factorization.

70663994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35331999.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 70663994 is about 8406.1878399189. The cubic root of 70663994 is about 413.4275307047.

The spelling of 70663994 in words is "seventy million, six hundred sixty-three thousand, nine hundred ninety-four".