61430965 has 8 divisors (see below), whose sum is σ = 74926008. Its totient is φ = 48338880.

The previous prime is 61430921. The next prime is 61431001. The reversal of 61430965 is 56903416.

It can be written as a sum of positive squares in 4 ways, for example, as 1306449 + 60124516 = 1143^2 + 7754^2 .

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

It is not a de Polignac number, because 61430965 - 2¹⁷ = 61299893 is a prime.

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 61430965.

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, 100402 + ... + 101011.

It is an arithmetic number, because the mean of its divisors is an integer number (9365751).

Almost surely, 2^61430965 is an apocalyptic number.

It is an amenable number.

61430965 is a deficient number, since it is larger than the sum of its proper divisors (13495043).

61430965 is a wasteful number, since it uses less digits than its factorization.

61430965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201479.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 61430965 is about 7837.7908239503. The cubic root of 61430965 is about 394.5745887345.

The spelling of 61430965 in words is "sixty-one million, four hundred thirty thousand, nine hundred sixty-five".