70768738 has 4 divisors (see below), whose sum is σ = 106153110. Its totient is φ = 35384368.

The previous prime is 70768721. The next prime is 70768757. The reversal of 70768738 is 83786707.

It is a happy number.

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., 66471409 + 4297329 = 8153^2 + 2073^2 .

It is a super-2 number, since 2×70768738² = 10016428556225288, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17692183 + ... + 17692186.

Almost surely, 2^70768738 is an apocalyptic number.

70768738 is a deficient number, since it is larger than the sum of its proper divisors (35384372).

70768738 is a wasteful number, since it uses less digits than its factorization.

70768738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35384371.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 70768738 is about 8412.4157053726. The cubic root of 70768738 is about 413.6317019861.

The spelling of 70768738 in words is "seventy million, seven hundred sixty-eight thousand, seven hundred thirty-eight".