70157722 has 4 divisors (see below), whose sum is σ = 105236586. Its totient is φ = 35078860.

The previous prime is 70157719. The next prime is 70157723. The reversal of 70157722 is 22775107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22775107 = 53 ⋅429719.

It can be written as a sum of positive squares in only one way, i.e., 40335201 + 29822521 = 6351^2 + 5461^2 .

It is not an unprimeable number, because it can be changed into a prime (70157723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17539429 + ... + 17539432.

Almost surely, 2^70157722 is an apocalyptic number.

70157722 is a deficient number, since it is larger than the sum of its proper divisors (35078864).

70157722 is a wasteful number, since it uses less digits than its factorization.

70157722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35078863.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 70157722 is about 8376.0206542248. The cubic root of 70157722 is about 412.4378298714.

The spelling of 70157722 in words is "seventy million, one hundred fifty-seven thousand, seven hundred twenty-two".