61420791 has 16 divisors (see below), whose sum is σ = 82938240. Its totient is φ = 40428960.

The previous prime is 61420771. The next prime is 61420819. The reversal of 61420791 is 19702416.

It is a happy number.

It is not a de Polignac number, because 61420791 - 2⁵ = 61420759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61420771) 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, 146380 + ... + 146798.

It is an arithmetic number, because the mean of its divisors is an integer number (5183640).

Almost surely, 2^61420791 is an apocalyptic number.

61420791 is a deficient number, since it is larger than the sum of its proper divisors (21517449).

61420791 is a wasteful number, since it uses less digits than its factorization.

61420791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 61420791 is about 7837.1417621477. The cubic root of 61420791 is about 394.5528048046.

The spelling of 61420791 in words is "sixty-one million, four hundred twenty thousand, seven hundred ninety-one".