61263299 has 6 divisors (see below), whose sum is σ = 62362860. Its totient is φ = 60165836.

The previous prime is 61263281. The next prime is 61263311. The reversal of 61263299 is 99236216.

It is not a de Polignac number, because 61263299 - 2²⁴ = 44486083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61263269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59612 + ... + 60630.

It is an arithmetic number, because the mean of its divisors is an integer number (10393810).

Almost surely, 2^61263299 is an apocalyptic number.

61263299 is a deficient number, since it is larger than the sum of its proper divisors (1099561).

61263299 is an frugal number, since it uses more digits than its factorization.

61263299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097 (or 1078 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 61263299 is about 7827.0875170781. The cubic root of 61263299 is about 394.2152855584.

The spelling of 61263299 in words is "sixty-one million, two hundred sixty-three thousand, two hundred ninety-nine".