70649351 has 4 divisors (see below), whose sum is σ = 71500632. Its totient is φ = 69798072.

The previous prime is 70649347. The next prime is 70649363. The reversal of 70649351 is 15394607.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70649351 - 2² = 70649347 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 (70649321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425516 + ... + 425681.

It is an arithmetic number, because the mean of its divisors is an integer number (17875158).

Almost surely, 2^70649351 is an apocalyptic number.

70649351 is a deficient number, since it is larger than the sum of its proper divisors (851281).

70649351 is an equidigital number, since it uses as much as digits as its factorization.

70649351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851280.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 70649351 is about 8405.3168292456. The cubic root of 70649351 is about 413.3989719004.

The spelling of 70649351 in words is "seventy million, six hundred forty-nine thousand, three hundred fifty-one".