616667290 has 8 divisors (see below), whose sum is σ = 1110001140. Its totient is φ = 246666912.

The previous prime is 616667267. The next prime is 616667297. The reversal of 616667290 is 92766616.

It can be written as a sum of positive squares in 2 ways, for example, as 567344761 + 49322529 = 23819^2 + 7023^2 .

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

It is not an unprimeable number, because it can be changed into a prime (616667297) 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, 30833355 + ... + 30833374.

Almost surely, 2^616667290 is an apocalyptic number.

616667290 is a deficient number, since it is larger than the sum of its proper divisors (493333850).

616667290 is a wasteful number, since it uses less digits than its factorization.

616667290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61666736.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 616667290 is about 24832.7865935340. The cubic root of 616667290 is about 851.1712987056.

The spelling of 616667290 in words is "six hundred sixteen million, six hundred sixty-seven thousand, two hundred ninety".