61746421 has 16 divisors (see below), whose sum is σ = 70904448. Its totient is φ = 53665920.

The previous prime is 61746403. The next prime is 61746427. The reversal of 61746421 is 12464716.

It is not a de Polignac number, because 61746421 - 2¹⁷ = 61615349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61746427) 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, 29605 + ... + 31621.

It is an arithmetic number, because the mean of its divisors is an integer number (4431528).

Almost surely, 2^61746421 is an apocalyptic number.

It is an amenable number.

61746421 is a deficient number, since it is larger than the sum of its proper divisors (9158027).

61746421 is a wasteful number, since it uses less digits than its factorization.

61746421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073 (or 2051 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 61746421 is about 7857.8890931344. The cubic root of 61746421 is about 395.2488332250.

The spelling of 61746421 in words is "sixty-one million, seven hundred forty-six thousand, four hundred twenty-one".