616601386 has 4 divisors (see below), whose sum is σ = 924902082. Its totient is φ = 308300692.

The previous prime is 616601371. The next prime is 616601387. The reversal of 616601386 is 683106616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 489250161 + 127351225 = 22119^2 + 11285^2 .

It is not an unprimeable number, because it can be changed into a prime (616601387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154150345 + ... + 154150348.

Almost surely, 2^616601386 is an apocalyptic number.

616601386 is a deficient number, since it is larger than the sum of its proper divisors (308300696).

616601386 is a wasteful number, since it uses less digits than its factorization.

616601386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308300695.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 616601386 is about 24831.4596026895. The cubic root of 616601386 is about 851.1409757137.

The spelling of 616601386 in words is "six hundred sixteen million, six hundred one thousand, three hundred eighty-six".