61000505 has 8 divisors (see below), whose sum is σ = 77506632. Its totient is φ = 45929728.

The previous prime is 61000493. The next prime is 61000517. The reversal of 61000505 is 50500016.

It is an interprime number because it is at equal distance from previous prime (61000493) and next prime (61000517).

It can be written as a sum of positive squares in 4 ways, for example, as 14160169 + 46840336 = 3763^2 + 6844^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61000505 - 2⁶ = 61000441 is a prime.

It is a super-2 number, since 2×61000505² = 7442123220510050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358742 + ... + 358911.

It is an arithmetic number, because the mean of its divisors is an integer number (9688329).

Almost surely, 2^61000505 is an apocalyptic number.

It is an amenable number.

61000505 is a deficient number, since it is larger than the sum of its proper divisors (16506127).

61000505 is a wasteful number, since it uses less digits than its factorization.

61000505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717675.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 61000505 is about 7810.2820051519. The cubic root of 61000505 is about 393.6508046084.

The spelling of 61000505 in words is "sixty-one million, five hundred five", and thus it is an aban number.