61161624 has 24 divisors (see below), whose sum is σ = 165646260. Its totient is φ = 20387184.

The previous prime is 61161619. The next prime is 61161643. The reversal of 61161624 is 42616116.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424662 + ... + 424805.

Almost surely, 2^61161624 is an apocalyptic number.

It is an amenable number.

61161624 is an abundant number, since it is smaller than the sum of its proper divisors (104484636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61161624 is a wasteful number, since it uses less digits than its factorization.

61161624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849479 (or 849472 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 61161624 is about 7820.5897475830. The cubic root of 61161624 is about 393.9970796935.

The spelling of 61161624 in words is "sixty-one million, one hundred sixty-one thousand, six hundred twenty-four".