61610965 has 8 divisors (see below), whose sum is σ = 79620408. Its totient is φ = 45497280.

The previous prime is 61610929. The next prime is 61610971. The reversal of 61610965 is 56901616.

It can be written as a sum of positive squares in 4 ways, for example, as 677329 + 60933636 = 823^2 + 7806^2 .

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

It is not a de Polignac number, because 61610965 - 2¹³ = 61602773 is a prime.

It is a super-2 number, since 2×61610965² = 7591822016462450, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61610965.

It is a congruent 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, 473866 + ... + 473995.

It is an arithmetic number, because the mean of its divisors is an integer number (9952551).

Almost surely, 2^61610965 is an apocalyptic number.

61610965 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61610965 is a deficient number, since it is larger than the sum of its proper divisors (18009443).

61610965 is a wasteful number, since it uses less digits than its factorization.

61610965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947879.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 61610965 is about 7849.2652522386. The cubic root of 61610965 is about 394.9595963587.

The spelling of 61610965 in words is "sixty-one million, six hundred ten thousand, nine hundred sixty-five".