356740861 has 4 divisors (see below), whose sum is σ = 369042300. Its totient is φ = 344439424.

The previous prime is 356740847. The next prime is 356740883. The reversal of 356740861 is 168047653.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 168047653 = 599 ⋅280547.

It can be written as a sum of positive squares in 2 ways, for example, as 298218361 + 58522500 = 17269^2 + 7650^2 .

It is a cyclic number.

It is not a de Polignac number, because 356740861 - 2¹³ = 356732669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356740831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6150676 + ... + 6150733.

It is an arithmetic number, because the mean of its divisors is an integer number (92260575).

Almost surely, 2^356740861 is an apocalyptic number.

It is an amenable number.

356740861 is a deficient number, since it is larger than the sum of its proper divisors (12301439).

356740861 is a wasteful number, since it uses less digits than its factorization.

356740861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12301438.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 356740861 is about 18887.5848376652. The cubic root of 356740861 is about 709.2254073120.

The spelling of 356740861 in words is "three hundred fifty-six million, seven hundred forty thousand, eight hundred sixty-one".