61662523 has 12 divisors (see below), whose sum is σ = 67039488. Its totient is φ = 56690400.

The previous prime is 61662487. The next prime is 61662529. The reversal of 61662523 is 32526616.

It is not a de Polignac number, because 61662523 - 2¹⁷ = 61531451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61662529) 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, 52998 + ... + 54148.

It is an arithmetic number, because the mean of its divisors is an integer number (5586624).

Almost surely, 2^61662523 is an apocalyptic number.

61662523 is a deficient number, since it is larger than the sum of its proper divisors (5376965).

61662523 is a wasteful number, since it uses less digits than its factorization.

61662523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494 (or 1481 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 61662523 is about 7852.5488218794. The cubic root of 61662523 is about 395.0697371931.

The spelling of 61662523 in words is "sixty-one million, six hundred sixty-two thousand, five hundred twenty-three".