61435601 has 8 divisors (see below), whose sum is σ = 64597800. Its totient is φ = 58343040.

The previous prime is 61435597. The next prime is 61435643. The reversal of 61435601 is 10653416.

It can be written as a sum of positive squares in 4 ways, for example, as 3066001 + 58369600 = 1751^2 + 7640^2 .

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 61435601 - 2² = 61435597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61432601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15596 + ... + 19133.

It is an arithmetic number, because the mean of its divisors is an integer number (8074725).

Almost surely, 2^61435601 is an apocalyptic number.

61435601 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

61435601 is a deficient number, since it is larger than the sum of its proper divisors (3162199).

61435601 is a wasteful number, since it uses less digits than its factorization.

61435601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34819.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 61435601 is about 7838.0865649723. The cubic root of 61435601 is about 394.5845142489.

The spelling of 61435601 in words is "sixty-one million, four hundred thirty-five thousand, six hundred one".