61463811 has 4 divisors (see below), whose sum is σ = 81951752. Its totient is φ = 40975872.

The previous prime is 61463791. The next prime is 61463819. The reversal of 61463811 is 11836416.

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

It is not a de Polignac number, because 61463811 - 2¹³ = 61455619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61463819) 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, 10243966 + ... + 10243971.

It is an arithmetic number, because the mean of its divisors is an integer number (20487938).

Almost surely, 2^61463811 is an apocalyptic number.

61463811 is a deficient number, since it is larger than the sum of its proper divisors (20487941).

61463811 is a wasteful number, since it uses less digits than its factorization.

61463811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20487940.

The product of its digits is 3456, while the sum is 30.

The square root of 61463811 is about 7839.8859047820. The cubic root of 61463811 is about 394.6449001145.

The spelling of 61463811 in words is "sixty-one million, four hundred sixty-three thousand, eight hundred eleven".