1057245668 has 6 divisors (see below), whose sum is σ = 1850179926. Its totient is φ = 528622832.

The previous prime is 1057245667. The next prime is 1057245727. The reversal of 1057245668 is 8665427501.

It can be written as a sum of positive squares in only one way, i.e., 981067684 + 76177984 = 31322^2 + 8728^2 .

It is a super-3 number, since 3×1057245668³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1057245661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132155705 + ... + 132155712.

It is an arithmetic number, because the mean of its divisors is an integer number (308363321).

Almost surely, 2^1057245668 is an apocalyptic number.

It is an amenable number.

1057245668 is a deficient number, since it is larger than the sum of its proper divisors (792934258).

1057245668 is a wasteful number, since it uses less digits than its factorization.

1057245668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264311421 (or 264311419 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 1057245668 is about 32515.3143610822. The cubic root of 1057245668 is about 1018.7289267700.

The spelling of 1057245668 in words is "one billion, fifty-seven million, two hundred forty-five thousand, six hundred sixty-eight".