61021077 has 8 divisors (see below), whose sum is σ = 87620064. Its totient is φ = 37551408.

The previous prime is 61021049. The next prime is 61021099. The reversal of 61021077 is 77012016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61021077 - 2⁸ = 61020821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61021577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782283 + ... + 782360.

It is an arithmetic number, because the mean of its divisors is an integer number (10952508).

Almost surely, 2^61021077 is an apocalyptic number.

It is an amenable number.

61021077 is a deficient number, since it is larger than the sum of its proper divisors (26598987).

61021077 is a wasteful number, since it uses less digits than its factorization.

61021077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564659.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 61021077 is about 7811.5988760304. The cubic root of 61021077 is about 393.6950516419.

The spelling of 61021077 in words is "sixty-one million, twenty-one thousand, seventy-seven".