61038813 has 12 divisors (see below), whose sum is σ = 89456864. Its totient is φ = 36993000.

The previous prime is 61038799. The next prime is 61038827. The reversal of 61038813 is 31883016.

It is an interprime number because it is at equal distance from previous prime (61038799) and next prime (61038827).

It is not a de Polignac number, because 61038813 - 2⁶ = 61038749 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 (61038833) 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, 83713 + ... + 84438.

Almost surely, 2^61038813 is an apocalyptic number.

It is an amenable number.

61038813 is a deficient number, since it is larger than the sum of its proper divisors (28418051).

61038813 is a wasteful number, since it uses less digits than its factorization.

61038813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168176 (or 168165 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 61038813 is about 7812.7340284948. The cubic root of 61038813 is about 393.7331909176.

The spelling of 61038813 in words is "sixty-one million, thirty-eight thousand, eight hundred thirteen".