61624245 has 16 divisors (see below), whose sum is σ = 102886272. Its totient is φ = 31437120.

The previous prime is 61624243. The next prime is 61624247. The reversal of 61624245 is 54242616.

It is an interprime number because it is at equal distance from previous prime (61624243) and next prime (61624247).

It is not a de Polignac number, because 61624245 - 2¹ = 61624243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61624243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88966 + ... + 89655.

It is an arithmetic number, because the mean of its divisors is an integer number (6430392).

Almost surely, 2^61624245 is an apocalyptic number.

It is an amenable number.

61624245 is a deficient number, since it is larger than the sum of its proper divisors (41262027).

61624245 is a wasteful number, since it uses less digits than its factorization.

61624245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178652.

The product of its digits is 11520, while the sum is 30.

The square root of 61624245 is about 7850.1111457100. Note that the first 4 decimals coincide. The cubic root of 61624245 is about 394.9879716468.

The spelling of 61624245 in words is "sixty-one million, six hundred twenty-four thousand, two hundred forty-five".