61624394 has 16 divisors (see below), whose sum is σ = 101976840. Its totient is φ = 27747840.

The previous prime is 61624393. The next prime is 61624397. The reversal of 61624394 is 49342616.

It can be written as a sum of positive squares in 4 ways, for example, as 24255625 + 37368769 = 4925^2 + 6113^2 .

It is not an unprimeable number, because it can be changed into a prime (61624393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27839 + ... + 29970.

Almost surely, 2^61624394 is an apocalyptic number.

61624394 is a deficient number, since it is larger than the sum of its proper divisors (40352446).

61624394 is a wasteful number, since it uses less digits than its factorization.

61624394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57865.

The product of its digits is 31104, while the sum is 35.

The square root of 61624394 is about 7850.1206360157. The cubic root of 61624394 is about 394.9882899909.

The spelling of 61624394 in words is "sixty-one million, six hundred twenty-four thousand, three hundred ninety-four".