61812623 has 2 divisors, whose sum is σ = 61812624. Its totient is φ = 61812622.

The previous prime is 61812617. The next prime is 61812679. The reversal of 61812623 is 32621816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61812623 - 2¹⁰ = 61811599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61812613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30906311 + 30906312.

It is an arithmetic number, because the mean of its divisors is an integer number (30906312).

Almost surely, 2^61812623 is an apocalyptic number.

61812623 is a deficient number, since it is larger than the sum of its proper divisors (1).

61812623 is an equidigital number, since it uses as much as digits as its factorization.

61812623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 61812623 is about 7862.1004190992. The cubic root of 61812623 is about 395.3900393437.

The spelling of 61812623 in words is "sixty-one million, eight hundred twelve thousand, six hundred twenty-three".