61624790 has 16 divisors (see below), whose sum is σ = 116763120. Its totient is φ = 23352480.

The previous prime is 61624789. The next prime is 61624793. The reversal of 61624790 is 9742616.

It is a super-2 number, since 2×61624790² = 7595229485088200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61624790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61624793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161981 + ... + 162360.

It is an arithmetic number, because the mean of its divisors is an integer number (7297695).

Almost surely, 2^61624790 is an apocalyptic number.

61624790 is a deficient number, since it is larger than the sum of its proper divisors (55138330).

61624790 is a wasteful number, since it uses less digits than its factorization.

61624790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324367.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 61624790 is about 7850.1458585175. The cubic root of 61624790 is about 394.9891360576.

The spelling of 61624790 in words is "sixty-one million, six hundred twenty-four thousand, seven hundred ninety".