61624791 has 12 divisors (see below), whose sum is σ = 90343032. Its totient is φ = 40469616.

The previous prime is 61624789. The next prime is 61624793. The reversal of 61624791 is 19742616.

It is an interprime number because it is at equal distance from previous prime (61624789) and next prime (61624793).

It is not a de Polignac number, because 61624791 - 2¹ = 61624789 is a prime.

It is a super-2 number, since 2×61624791² = 7595229731587362, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 50496 + ... + 51701.

It is an arithmetic number, because the mean of its divisors is an integer number (7528586).

Almost surely, 2^61624791 is an apocalyptic number.

61624791 is a deficient number, since it is larger than the sum of its proper divisors (28718241).

61624791 is a wasteful number, since it uses less digits than its factorization.

61624791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102270 (or 102267 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 61624791 is about 7850.1459222106. The cubic root of 61624791 is about 394.9891381941.

The spelling of 61624791 in words is "sixty-one million, six hundred twenty-four thousand, seven hundred ninety-one".