70436 has 6 divisors (see below), whose sum is σ = 123270. Its totient is φ = 35216.

The previous prime is 70429. The next prime is 70439. The reversal of 70436 is 63407.

It can be written as a sum of positive squares in only one way, i.e., 65536 + 4900 = 256^2 + 70^2 .

It is a super-2 number, since 2×70436² = 9922460192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8801 + ... + 8808.

It is an arithmetic number, because the mean of its divisors is an integer number (20545).

2⁷⁰⁴³⁶ is an apocalyptic number.

It is an amenable number.

70436 is a deficient number, since it is larger than the sum of its proper divisors (52834).

70436 is a wasteful number, since it uses less digits than its factorization.

70436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17613 (or 17611 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 70436 is about 265.3978146104. The cubic root of 70436 is about 41.2982416924.

The spelling of 70436 in words is "seventy thousand, four hundred thirty-six".