611390101 has 6 divisors (see below), whose sum is σ = 711208950. Its totient is φ = 524048616.

The previous prime is 611390081. The next prime is 611390119. The reversal of 611390101 is 101093116.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 324900625 + 286489476 = 18025^2 + 16926^2 .

It is not a de Polignac number, because 611390101 - 2⁷ = 611389973 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 (611390161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6238626 + ... + 6238723.

It is an arithmetic number, because the mean of its divisors is an integer number (118534825).

Almost surely, 2^611390101 is an apocalyptic number.

It is an amenable number.

611390101 is a deficient number, since it is larger than the sum of its proper divisors (99818849).

611390101 is a wasteful number, since it uses less digits than its factorization.

611390101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12477363 (or 12477356 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 611390101 is about 24726.3038281099. The cubic root of 611390101 is about 848.7363465406.

The spelling of 611390101 in words is "six hundred eleven million, three hundred ninety thousand, one hundred one".