61960399 has 4 divisors (see below), whose sum is σ = 62599264. Its totient is φ = 61321536.

The previous prime is 61960397. The next prime is 61960403. The reversal of 61960399 is 99306916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61960399 - 2¹ = 61960397 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 (61960397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319287 + ... + 319480.

It is an arithmetic number, because the mean of its divisors is an integer number (15649816).

Almost surely, 2^61960399 is an apocalyptic number.

61960399 is a deficient number, since it is larger than the sum of its proper divisors (638865).

61960399 is an equidigital number, since it uses as much as digits as its factorization.

61960399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638864.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 61960399 is about 7871.4928063233. The cubic root of 61960399 is about 395.7048761035.

The spelling of 61960399 in words is "sixty-one million, nine hundred sixty thousand, three hundred ninety-nine".