1071666436 has 6 divisors (see below), whose sum is σ = 1875416270. Its totient is φ = 535833216.

The previous prime is 1071666419. The next prime is 1071666437. The reversal of 1071666436 is 6346661701.

It can be written as a sum of positive squares in only one way, i.e., 728676036 + 342990400 = 26994^2 + 18520^2 .

It is a super-2 number, since 2×1071666436² = 2296937900097884192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071666437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133958301 + ... + 133958308.

Almost surely, 2^1071666436 is an apocalyptic number.

It is an amenable number.

1071666436 is a deficient number, since it is larger than the sum of its proper divisors (803749834).

1071666436 is a wasteful number, since it uses less digits than its factorization.

1071666436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267916613 (or 267916611 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1071666436 is about 32736.3167751047. The cubic root of 1071666436 is about 1023.3398263996.

The spelling of 1071666436 in words is "one billion, seventy-one million, six hundred sixty-six thousand, four hundred thirty-six".