361208661 has 8 divisors (see below), whose sum is σ = 525394464. Its totient is φ = 218914320.

The previous prime is 361208581. The next prime is 361208663. The reversal of 361208661 is 166802163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 361208661 - 2¹¹ = 361206613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 10945717 = 361208661 / (3 + 6 + 1 + 2 + 0 + 8 + 6 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361208663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5472826 + ... + 5472891.

It is an arithmetic number, because the mean of its divisors is an integer number (65674308).

Almost surely, 2^361208661 is an apocalyptic number.

It is an amenable number.

361208661 is a deficient number, since it is larger than the sum of its proper divisors (164185803).

361208661 is a wasteful number, since it uses less digits than its factorization.

361208661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10945731.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 361208661 is about 19005.4902857043. The cubic root of 361208661 is about 712.1738971837.

The spelling of 361208661 in words is "three hundred sixty-one million, two hundred eight thousand, six hundred sixty-one".