61563464 has 16 divisors (see below), whose sum is σ = 115556220. Its totient is φ = 30748480.

The previous prime is 61563431. The next prime is 61563473. The reversal of 61563464 is 46436516.

It can be written as a sum of positive squares in 2 ways, for example, as 59136100 + 2427364 = 7690^2 + 1558^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4862 + ... + 12114.

Almost surely, 2^61563464 is an apocalyptic number.

It is an amenable number.

61563464 is a deficient number, since it is larger than the sum of its proper divisors (53992756).

61563464 is a wasteful number, since it uses less digits than its factorization.

61563464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8320 (or 8316 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 61563464 is about 7846.2388441852. The cubic root of 61563464 is about 394.8580678980.

The spelling of 61563464 in words is "sixty-one million, five hundred sixty-three thousand, four hundred sixty-four".